Alex Lupsasca

  alex lupsasca: Lectures on the Infrared Structure of Gravity and Gauge Theory Andrew Strominger, 2018-03-06 A short, graduate-level synthesis of recent developments in theoretical physics, from a pioneer in the field Lectures on the Infrared Structure of Gravity and Gauge Theory presents an accessible, graduate-level synthesis of a frontier research area in theoretical physics. Based on a popular Harvard University course taught by the author, this book gives a concise introduction to recent discoveries concerning the structure of gravity and gauge theory at very long distances. These discoveries unite three disparate but well-developed subjects in physics. The first subject is the soft theorems, which were found by particle physicists in the 1950s to control the behavior of low-energy photons and are essential for all collider predictions. The second subject is asymptotic symmetries, found by general relativists in the 1960s to provide a surprising, infinite number of exact relations between distinct physical phenomena. The third subject is the memory effect, the measurement of which is sought in upcoming gravitational wave observations. An exploration of the physical and mathematical equivalence of these three subjects has provided a powerful new perspective on old results and led to a plethora of new results, involving symmetries of QED, gluon scattering amplitudes, flat-space holography in quantum gravity, black hole information, and beyond. Uniquely connective and cutting-edge, Lectures on the Infrared Structure of Gravity and Gauge Theory takes students and scholars to the forefront of new developments in the discipline. Materials are presented in a lecture notes style with problem sets included Concise and accessible pedagogical approach Topics include soft theorems, the memory effect, asymptotic symmetries with applications to QED, Yang-Mills theory, quantum gravity, and black holes
  alex lupsasca: Fifteenth Marcel Grossmann Meeting, The: On Recent Developments In Theoretical And Experimental General Relativity, Astrophysics, And Relativistic Field Theories - Proceedings Of The Mg15 Meeting On General Relativity (In 3 Volumes) Elia S Battistelli, Robert T Jantzen, Remo Ruffini, 2022-05-10 The three volumes of the proceedings of MG15 give a broad view of all aspects of gravitational physics and astrophysics, from mathematical issues to recent observations and experiments. The scientific program of the meeting included 40 morning plenary talks over 6 days, 5 evening popular talks and nearly 100 parallel sessions on 71 topics spread over 4 afternoons. These proceedings are a representative sample of the very many oral and poster presentations made at the meeting.Part A contains plenary and review articles and the contributions from some parallel sessions, while Parts B and C consist of those from the remaining parallel sessions. The contents range from the mathematical foundations of classical and quantum gravitational theories including recent developments in string theory, to precision tests of general relativity including progress towards the detection of gravitational waves, and from supernova cosmology to relativistic astrophysics, including topics such as gamma ray bursts, black hole physics both in our galaxy and in active galactic nuclei in other galaxies, and neutron star, pulsar and white dwarf astrophysics. Parallel sessions touch on dark matter, neutrinos, X-ray sources, astrophysical black holes, neutron stars, white dwarfs, binary systems, radiative transfer, accretion disks, quasars, gamma ray bursts, supernovas, alternative gravitational theories, perturbations of collapsed objects, analog models, black hole thermodynamics, numerical relativity, gravitational lensing, large scale structure, observational cosmology, early universe models and cosmic microwave background anisotropies, inhomogeneous cosmology, inflation, global structure, singularities, chaos, Einstein-Maxwell systems, wormholes, exact solutions of Einstein's equations, gravitational waves, gravitational wave detectors and data analysis, precision gravitational measurements, quantum gravity and loop quantum gravity, quantum cosmology, strings and branes, self-gravitating systems, gamma ray astronomy, cosmic rays and the history of general relativity.
  alex lupsasca: Light in the Darkness Heino Falcke, Jörg Römer, 2021-05-04 An astrophysicist chronicles his quest to photograph a black hole and reflects on its spiritual ramifications in this international-bestselling memoir. On April 10, 2019, award-winning astrophysicist Heino Falcke presented the first image ever captured of a black hole at an international press conference—a turning point in astronomy that Science magazine called the scientific breakthrough of the year. That photo was captured with the unthinkable commitment of an intercontinental team of astronomers who transformed the world into a global telescope. While this image achieved Falcke’s goal in making a black hole “visible” for the first time, he recognizes that the photo itself asks more questions for humanity than it answers. Light in the Darkness takes us on Falcke’s extraordinary journey to the darkest corners of the universe. From the first humans looking up at the night sky to modern astrophysics, from the study of black holes to the still-unsolved mysteries of the universe, Falcke asks, in even the greatest triumphs of science, is there room for doubts, faith, and a God? A plea for curiosity and humility, Light in the Darkness sees one of the great minds shaping the world today as he ponders the big, pressing questions that present themselves when we look up at the stars.
  alex lupsasca: Philosophy of Astrophysics Nora Mills Boyd, Siska De Baerdemaeker, Kevin Heng, Vera Matarese, 2023-06-28 This is an open access book. This book, the first edited collection of its kind, explores the recent emergence of philosophical research in astrophysics. It assembles a variety of original essays from scholars who are currently shaping this field, and it combines insightful overviews of the current state of play with novel, significant contributions. It therefore provides an ideal source for understanding the current debates in philosophy of astrophysics, and it offers new ideas for future cutting-edge research. The selection of essays offered in this book addresses methodological and metaphysical questions that target a wide range of topics, including dark matter, black holes, astrophysical observations and modelling. The book serves as the first standard resource in philosophy of astrophysics for all scholars who work in the field and want to expand or deepen their knowledge, but it also provides an accessible guide for all those philosophers and scientists who are interested in getting a first, basic understanding of the main issues in philosophy of astrophysics.
  alex lupsasca: Formulas and Theorems for the Special Functions of Mathematical Physics Wilhelm Magnus, Fritz Oberhettinger, Raj Pal Soni, 2013-11-11 This is a new and enlarged English edition of the book which, under the title Formeln und Satze fur die Speziellen Funktionen der mathe matischen Physik appeared in German in 1946. Much of the material (part of it unpublished) did not appear in the earlier editions. We hope that these additions will be useful and yet not too numerous for the purpose of locating .with ease any particular result. Compared to the first two (German) editions a change has taken place as far as the list of references is concerned. They are generally restricted to books and monographs and accomodated at the end of each individual chapter. Occasional references to papers follow those results to which they apply. The authors felt a certain justification for this change. At the time of the appearance of the previous edition nearly twenty years ago much of the material was scattered over a number of single contributions. Since then most of it has been included in books and monographs with quite exhaustive bibliographies. For information about numerical tables the reader is referred to Mathematics of Computation, a periodical publis hed by the American Mathematical Society; Handbook of Mathe matical Functions with formulas, graphs and mathematical tables National Bureau of Standards Applied Mathematics Series, 55, 1964, 1046 pp., Government Printing Office, Washington, D.C., and FLETCHER, MILLER, ROSENHEAD, Index of Mathematical Tables, Addison-Wesley, Reading, Mass.) .. There is a list of symbols and abbreviations at the end of the book.
  alex lupsasca: Gravitational Wave Astrophysics Carlos F. Sopuerta, 2014-12-15 This book offers review chapters written by invited speakers of the 3rd Session of the Sant Cugat Forum on Astrophysics - Gravitational Waves Astrophysics. All chapters have been peer reviewed. The book goes beyond normal conference proceedings in that it provides a wide panorama of the astrophysics of gravitational waves and serves as a reference work for researchers in the field.
  alex lupsasca: The Strongest Magnetic Fields in the Universe Vasily S. Beskin, A. Balogh, Maurizio Falanga, Maxim Lyutikov, Sandro Mereghetti, Tsvi Piran, R.A. Treumann, 2016-01-29 This volume extends the ISSI series on magnetic fields in the Universe into the domain of what are by far the strongest fields in the Universe, and stronger than any field that could be produced on Earth. The chapters describe the magnetic fields in non-degenerate strongly magnetized stars, in degenerate stars (such as white dwarfs and neutron stars), exotic members called magnetars, and in their environments, as well as magnetic fields in the environments of black holes. These strong fields have a profound effect on the behavior of matter, visible in particular in highly variable processes like radiation in all known wavelengths, including Gamma-Ray bursts. The generation and structure of such strong magnetic fields and effects on the environment are also described.
  alex lupsasca: Gravity James B. Hartle, 2021-06-24 Best-selling, accessible physics-first introduction to GR uses minimal new mathematics and begins with the essential physical applications.
  alex lupsasca: The Physics of the Early Universe Eleftherios Papantonopoulos, 2005-01-07 The Physics of the Early Universe is an edited and expanded version of the lectures given at a recent summer school of the same name. Its aim is to present an advanced multi-authored textbook that meets the needs of both postgraduate students and young researchers interested in, or already working on, problems in cosmology and general relativity, with emphasis on the early universe. A particularly strong feature of the present work is the constructive-critical approach to the present mainstream theories, the careful assessment of some alternative approaches, and the overall balance between theoretical and observational considerations. As such, this book will also benefit experienced scientists and nonspecialists from related areas of research.
  alex lupsasca: Structure of Dynamical Systems J.M. Souriau, 2012-12-06 The aim of the book is to treat all three basic theories of physics, namely, classical mechanics, statistical mechanics, and quantum mechanics from the same perspective, that of symplectic geometry, thus showing the unifying power of the symplectic geometric approach. Reading this book will give the reader a deep understanding of the interrelationships between the three basic theories of physics. This book is addressed to graduate students and researchers in mathematics and physics who are interested in mathematical and theoretical physics, symplectic geometry, mechanics, and (geometric) quantization.
  alex lupsasca: Special Functions and Orthogonal Polynomials Richard Beals, Roderick Wong, 2016-05-17 A comprehensive graduate-level introduction to classical and contemporary aspects of special functions.
  alex lupsasca: An Introduction to the Theory of Surreal Numbers Harry Gonshor, 1986-09-18 These notes provide a formal introduction to the theory of surreal numbers in a clear and lucid style.
  alex lupsasca: Spectral Methods in MATLAB Lloyd N. Trefethen, 2000-07-01 Mathematics of Computing -- Numerical Analysis.
  alex lupsasca: Quantum Field Theory and the Standard Model Matthew D. Schwartz, 2014 A modern introduction to quantum field theory for graduates, providing intuitive, physical explanations supported by real-world applications and homework problems.
  alex lupsasca: Spectra and Pseudospectra Lloyd N. Trefethen, Mark Embree, 2020-05-05 Pure and applied mathematicians, physicists, scientists, and engineers use matrices and operators and their eigenvalues in quantum mechanics, fluid mechanics, structural analysis, acoustics, ecology, numerical analysis, and many other areas. However, in some applications the usual analysis based on eigenvalues fails. For example, eigenvalues are often ineffective for analyzing dynamical systems such as fluid flow, Markov chains, ecological models, and matrix iterations. That's where this book comes in. This is the authoritative work on nonnormal matrices and operators, written by the authorities who made them famous. Each of the sixty sections is written as a self-contained essay. Each document is a lavishly illustrated introductory survey of its topic, complete with beautiful numerical experiments and all the right references. The breadth of included topics and the numerous applications that provide links between fields will make this an essential reference in mathematics and related sciences.
  alex lupsasca: Lorentzian Wormholes Matt Visser, 1996-08-09 From H.G. Wells to Star Trek, audiences have been captivated by the notions of time travel, time warps, space warps, and wornholes. But science fiction is not the only realm where these concepts thrive. An active group of general relativists and quantum field theorists has produced a considerable body of serious (thought admittedly speculative) mathematical and physical analyses of the wormhole system. Now, with this fascinating book, readers can explore in depth the science behind the science fiction. Drawing on pivotal work by Einstein, Wheeler, Morris, Thorne, Hawking, and others, Matt Visser charts the development and current state of Lorentzian wormhole physics. Dr. Visser shows that by pushing established physical theories to their limits, it is possible to deduce the physical properties of such exotica as wormholes and time travel. The physical framework he uses is derived from one of the major research frontiers of modern theoretical physics: quantum gravity-the intersection of classical Einstein gravity and quantum field theory. Physicists, students of general relativity, cosmology, quantum physics, or any interested reader with a background in physics wil find this a provocative introduction to an exciting and active topic of ongoing research.
  alex lupsasca: Kinematical Theory of Spinning Particles M. Rivas, 2006-04-11 Classical spin is described in terms of velocities and acceleration so that knowledge of advanced mathematics is not required. Written in the three-dimensional notation of vector calculus, it can be followed by undergraduate physics students, although some notions of Lagrangian dynamics and group theory are required. It is intended as a general course at a postgraduate level for all-purpose physicists. This book presents a unified approach to classical and quantum mechanics of spinning particles, with symmetry principles as the starting point. A classical concept of an elementary particle is presented. The variational statements to deal with spinning particles are revisited. It is shown that, by explicitly constructing different models, symmetry principles are sufficient for the description of either classical or quantum-mechanical elementary particles. Several spin effects are analyzed.
  alex lupsasca: Polarization of Light Serge Huard, 1997-03-06 Understanding the polarization of light is becoming increasingly important in the study of laser physics, nonlinear optics, and optical waveguides. This book covers the basics of polarized light representation, the propagation of light through anisotropic media, the mathematical formalism used, and induced anisotropy, devices which use induced or natural anisotropy and polarization phenomena in guided optics. Discusses both fundamentals and applications in a range of practical devices. Gives a global view of the state of polarization representation.
  alex lupsasca: Astrophysical Black Holes Francesco Haardt, Vittorio Gorini, Ugo Moschella, Aldo Treves, Monica Colpi, 2015-11-03 Based on graduate school lectures in contemporary relativity and gravitational physics, this book gives a complete and unified picture of the present status of theoretical and observational properties of astrophysical black holes. The chapters are written by internationally recognized specialists. They cover general theoretical aspects of black hole astrophysics, the theory of accretion and ejection of gas and jets, stellar-sized black holes observed in the Milky Way, the formation and evolution of supermassive black holes in galactic centers and quasars as well as their influence on the dynamics in galactic nuclei. The final chapter addresses analytical relativity of black holes supporting theoretical understanding of the coalescence of black holes as well as being of great relevance in identifying gravitational wave signals. With its introductory chapters the book is aimed at advanced graduate and post-graduate students, but it will also be useful for specialists.
  alex lupsasca: The Nuclear Equation of State Walter Greiner, Horst Stöcker, 2013-06-29 The NATO Advanced Study Institute on The Nuclear Equatioo of State was held at Peiiiscola Spain from May 22- June 3, 1989. The school was devoted to the advances, theoretical and experimental, made during the past fifteen years in the physics of nuclear matter under extreme conditions, such as high compression and high temperature. Moie than 300 people had applied for participatio- this demonstrates the tremendous interest in the various subjects presented at the school. Indeed, the topic of this school, namely the Nuclear Equatioo of State, • plays the central role in high energy heavy ion collisions; • contains the intriguing possibilities of various phase transitions (gas - vapor, meson condensation, quark - gluon plasma); • plays an important role in the static and dynamical behavior of stars, especially in supernova explosions and in neutron star stability. The investigation on the nuclear equation of state can only be accomplished in the laboratory by compressing and heating up nuclear matter and the only mechanism known to date to achieve this goal is through shock compression and -heating in violent high energy heavy ion collisions. This key mechanism has been proposed and highly disputed in of high energy heavy ion physics, the early 70's. It plays a central role in the whole field and particularly in our discussions during the two weeks at Peiiiscola.
  alex lupsasca: Algebraic Set Theory André Joyal, Ieke Moerdijk, 1995-09-14 This book offers a new algebraic approach to set theory. The authors introduce a particular kind of algebra, the Zermelo-Fraenkel algebras, which arise from the familiar axioms of Zermelo-Fraenkel set theory. Furthermore, the authors explicitly construct these algebras using the theory of bisimulations. Their approach is completely constructive, and contains both intuitionistic set theory and topos theory. In particular it provides a uniform description of various constructions of the cumulative hierarchy of sets in forcing models, sheaf models and realizability models. Graduate students and researchers in mathematical logic, category theory and computer science should find this book of great interest, and it should be accessible to anyone with a background in categorical logic.
  alex lupsasca: Anticipating The Next Discoveries In Particle Physics (Tasi 2016) - Proceedings Of The 2016 Theoretical Advanced Study Institute In Elementary Particle Physics Rouven Essig, Ian Low, 2018-05-22 This volume is a compilation of lectures delivered at the TASI 2016 summer school, 'Anticipating the Next Discoveries in Particle Physics', held at the University of Colorado at Boulder in June 2016. The school focused on topics in theoretical particle physics, phenomenology, dark matter, and cosmology of interest to contemporary researchers in these fields. The lectures are accessible to graduate students in the initial stages of their research careers.
  alex lupsasca: Buletinul Informativ Romania. Ministerul Agriculturii și Domeniilor, 1934
  alex lupsasca: Gauge Symmetries and Fibre Bundles A.P. Balachandran, G. Marmo, B.-S. Skagerstam, A. Stern, 1983-09
  alex lupsasca: Singularity Theory and Gravitational Lensing Arlie O. Petters, Harold Levine, Joachim Wambsganss, 2012-12-06 Astronomers do not do experiments. They observe the universe primarily through detect ing light emitted by stars and other luminous objects. Since this light must travel through space to reach us, variations in the metric of space affects the appearance of astronomical objects. These variations lead to dramatic changes in the shape and brightness of astronom ical sources. Because these variations are sensitive to mass rather than to light, observations of gravitational lensing enable astronomers to probe the mass distribution of the universe. With gravitational lensing observations, astronomers are addressing many of the most important scientific questions in astronomy and physics: • What is the universe made of? Most of the energy and mass in the universe is not in the form of luminous objects. Stars account for less than 1 % of the energy density of the universe. Perhaps, as much as another 3% of the energy density of the universe is in the form of warm gas that fills the space between galaxies. The remaining 96% of the energy density is in some yet unidentified form. Roughly one third of this energy density of the universe is dark matter, matter that clusters gravitationally but does not emit light. Most cosmologists suspect that this dark matter is composed of weakly interacting subatomic particles. However, most of the energy density of the universe appears to be in an even stranger form: energy associated with empty space.
  alex lupsasca: Black Holes in Higher Dimensions Gary T. Horowitz, 2012-04-19 The first book devoted to black holes in more than four dimensions, for graduate students and researchers.
  alex lupsasca: A Relativist's Toolkit Eric Poisson, 2004-05-06 This 2004 textbook fills a gap in the literature on general relativity by providing the advanced student with practical tools for the computation of many physically interesting quantities. The context is provided by the mathematical theory of black holes, one of the most elegant, successful, and relevant applications of general relativity. Among the topics discussed are congruencies of timelike and null geodesics, the embedding of spacelike, timelike and null hypersurfaces in spacetime, and the Lagrangian and Hamiltonian formulations of general relativity. Although the book is self-contained, it is not meant to serve as an introduction to general relativity. Instead, it is meant to help the reader acquire advanced skills and become a competent researcher in relativity and gravitational physics. The primary readership consists of graduate students in gravitational physics. It will also be a useful reference for more seasoned researchers working in this field.
  alex lupsasca: Ray Optics, Fermat’s Principle, and Applications to General Relativity Volker Perlick, 2003-07-01 This book is about the mathematical theory of light propagation in media on general-relativistic spacetimes. The first part discusses the transition from Maxwell's equations to ray optics. The second part establishes a general mathematical framework for treating ray optics as a theory in its own right, making extensive use of the Hamiltonian formalism. This part also includes a detailed discussion of variational principles (i.e., various versions of Fermat's principle) for light rays in general-relativistic media. Some applications, e.g. to gravitational lensing, are worked out. The reader is assumed to have some basic knowledge of general relativity and some familiarity with differential geometry. Some of the results are published here for the first time, e.g. a general-relativistic version of Fermat's principle for light rays in a medium that has to satisfy some regularity condition only.
  alex lupsasca: An Introduction To Covariant Quantum Gravity And Asymptotic Safety Roberto Percacci, 2017-02-17 This book covers recent developments in the covariant formulation of quantum gravity. Developed in the 1960s by Feynman and DeWitt, by the 1980s this approach seemed to lead nowhere due to perturbative non-renormalizability. The possibility of non-perturbative renormalizability or 'asymptotic safety', originally suggested by Weinberg but largely ignored for two decades, was revived towards the end of the century by technical progress in the field of the renormalization group. It is now a very active field of research, providing an alternative to other approaches to quantum gravity.Written by one of the early contributors to this subject, this book provides a gentle introduction to the relevant ideas and calculational techniques. Several explicit calculations gradually bring the reader close to the current frontier of research. The main difficulties and present lines of development are also outlined.
  alex lupsasca: Relativity John Lighton Synge, 1960 Essential tensor formulae for Riemannian space-time -- The world-function [omega] -- Chronometry in Riemannian space-time -- The material continuum -- Some properties of Einstein fields -- Integral conservation laws and equations of motion -- Fields with spherical symmetry -- Some special universes -- Gravitational waves -- Electromagnetism -- Geometrical optics.
  alex lupsasca: Part I: Particles and Fields. Part II: Foundations of Quantum Mechanics Arthur S. Wightman, 1996-12-16 The first part of this third volume of Wigner's Collected Works is devoted to his analysis of symmetries in quantum mechanics, of the relativistic wave equations, of relativistic particle theory, and of field theory. It is introduced by the masterly annotation of Arthur S. Wightman. Abner Shimony annotates the second part where the reader will find Wigner's contributions to the foundations of quantum physics and to the problems of measurement.
  alex lupsasca: The Shadow of the Black Hole John W. Moffat, 2020 The Shadow of the Black Hole shares the entertaining history of black holes.
  alex lupsasca: Quantum Field Theory Mark Srednicki, 2007-01-25 Quantum field theory is the basic mathematical framework that is used to describe elementary particles. This textbook provides a complete and essential introduction to the subject. Assuming only an undergraduate knowledge of quantum mechanics and special relativity, this book is ideal for graduate students beginning the study of elementary particles. The step-by-step presentation begins with basic concepts illustrated by simple examples, and proceeds through historically important results to thorough treatments of modern topics such as the renormalization group, spinor-helicity methods for quark and gluon scattering, magnetic monopoles, instantons, supersymmetry, and the unification of forces. The book is written in a modular format, with each chapter as self-contained as possible, and with the necessary prerequisite material clearly identified. It is based on a year-long course given by the author and contains extensive problems, with password protected solutions available to lecturers at www.cambridge.org/9780521864497.
  alex lupsasca: General Relativity and Gravitation Abhay Ashtekar, Beverly K. Berger, James Isenberg, Malcolm MacCallum, 2015-06-01 Explore spectacular advances in cosmology, relativistic astrophysics, gravitational wave science, mathematics, computational science, and the interface of gravitation and quantum physics with this unique celebration of the centennial of Einstein's discovery of general relativity. Twelve comprehensive and in-depth reviews, written by a team of world-leading international experts, together present an up-to-date overview of key topics at the frontiers of these areas, with particular emphasis on the significant developments of the last three decades. Interconnections with other fields of research are also highlighted, making this an invaluable resource for both new and experienced researchers. Commissioned by the International Society on General Relativity and Gravitation, and including accessible introductions to cutting-edge topics, ample references to original research papers, and informative colour figures, this is a definitive reference for researchers and graduate students in cosmology, relativity, and gravitational science.
  alex lupsasca: LHC Physics T. Binoth, C. Buttar, P. J. Clark, E.W.N. Glover, 2012-04-25 Exploring the phenomenology of the Large Hadron Collider (LHC) at CERN, LHC Physics focuses on the first years of data collected at the LHC as well as the experimental and theoretical tools involved. It discusses a broad spectrum of experimental and theoretical activity in particle physics, from the searches for the Higgs boson and physics beyond the Standard Model to studies of quantum chromodynamics, the B-physics sector, and the properties of dense hadronic matter in heavy-ion collisions. Covering the topics in a pedagogical manner, the book introduces the theoretical and phenomenological framework of hadron collisions and presents the current theoretical models of frontier physics. It offers overviews of the main detector components, the initial calibration procedures, and search strategies. The authors also provide explicit examples of physics analyses drawn from the recently shut down Tevatron. In the coming years, or perhaps even sooner, the LHC experiments may reveal the Higgs boson and offer insight beyond the Standard Model. Written by some of the most prominent and active researchers in particle physics, this volume equips new physicists with the theory and tools needed to understand the various LHC experiments and prepares them to make future contributions to the field.
  alex lupsasca: Topology in Condensed Matter Michael I. Monastyrsky, 2010-02-12 This volume is based on the talks and lectures given by the participants of the 3-month seminar program “Topology in Condensed Matter,” which was held in the MPIPKS Dresden, 8 May–31 July 2002 under the scienti?c direction of Professors M. Kleman, S. Novikov, and myself. The aim of this program was to discuss recent applications of topology to several areas in condensed matter physics and related ?elds like biology. The last 30 years of the development of modern physics a?rmed two important ideas. The ?rst is the e?cient applications of topology in physics. One should mention applications in condensed matter, such as classi?cation of defects and textures in liquid crystals and super?uid liquids, the role of entangibility in polymer physics and DNA structures. The second tendency is also very prevalent. Some important discoveries in particle physics and condensed m- ter led to new and unpredictable questions in pure mathematics. We refer to the invention of monopoles and instantons in quantum ?eld theory, q- sicrystals ?uid membranes of high genus, fullerenes (C ,C , etc. ), and so on 60 90 in condensed matter. The number of such applications in the last years has increased substantially. The papers presented in this volume and the next one “Topology in - ology” re?ect the spectrum of topics discussed. Besides original papers, a mini-course in topology for physicists and biologists was organized. These lectures will be published in the second volume.
  alex lupsasca: The Physics of Waves Howard Georgi, 1993 The first complete introduction to waves and wave phenomena by a renowned theorist. Covers damping, forced oscillations and resonance; normal modes; symmetries; traveling waves; signals and Fourier analysis; polarization; diffraction.
  alex lupsasca: Conformal Field Theory Philippe Francesco, Pierre Mathieu, David Sénéchal, 1997 Filling an important gap in the literature, this comprehensive text develops conformal field theory from first principles. The treatment is self-contained, pedagogical, and exhaustive, and includes a great deal of background material on quantum field theory, statistical mechanics, Lie algebras and affine Lie algebras. The many exercises, with a wide spectrum of difficulty and subjects, complement and in many cases extend the text. The text is thus not only an excellent tool for classroom teaching but also for individual study. Intended primarily for graduate students and researchers in theoretical high-energy physics, mathematical physics, condensed matter theory, statistical physics, the book will also be of interest in other areas of theoretical physics and mathematics. It will prepare the reader for original research in this very active field of theoretical and mathematical physics.
  alex lupsasca: The Singular Universe and the Reality of Time Roberto Mangabeira Unger, Lee Smolin, 2021-10-07 Cosmology is in crisis. The more we discover, the more puzzling the universe appears to be. How and why are the laws of nature what they are? A philosopher and a physicist, world-renowned for their radical ideas in their fields, argue for a revolution. To keep cosmology scientific, we must replace the old view in which the universe is governed by immutable laws by a new one in which laws evolve. Then we can hope to explain them. The revolution that Roberto Mangabeira Unger and Lee Smolin propose relies on three central ideas. There is only one universe at a time. Time is real: everything in the structure and regularities of nature changes sooner or later. Mathematics, which has trouble with time, is not the oracle of nature and the prophet of science; it is simply a tool with great power and immense limitations. The argument is readily accessible to non-scientists as well as to the physicists and cosmologists whom it challenges.
  alex lupsasca: Quantum Phase Transitions Subir Sachdev, 2011-04-07 Describing the physical properties of quantum materials near critical points with long-range many-body quantum entanglement, this book introduces readers to the basic theory of quantum phases, their phase transitions and their observable properties. This second edition begins with a new section suitable for an introductory course on quantum phase transitions, assuming no prior knowledge of quantum field theory. It also contains several new chapters to cover important recent advances, such as the Fermi gas near unitarity, Dirac fermions, Fermi liquids and their phase transitions, quantum magnetism, and solvable models obtained from string theory. After introducing the basic theory, it moves on to a detailed description of the canonical quantum-critical phase diagram at non-zero temperatures. Finally, a variety of more complex models are explored. This book is ideal for graduate students and researchers in condensed matter physics and particle and string theory.
Alex Lupsasca
E -m ail: alex an d ru .v .lu p sasca@ van d erb ilt.ed u V an d erb ilt U n iversity C ell: + 1 (617) 386-3739 N ash v ille, T en n essee R e se a r c h In t e r e st s B l ack h o ei mg n, trb sv d( y- …

The Black Hole Photon Ring - Massachusetts Institute of …
Johnson, Lupsasca et al 1907.04329. Lensing by Kerr black holes. Light rays in the photon shell can circumnavigate the black hole multiple times. A light source can connect to an observer …

Black hole energy extraction and spin in polarized EHT images
Does the relationship between 2, spin, and energy flux persist in GRMHD simulations? How does this change with inclination/off-equatorial emission? With omega?

Alexandru Lupsasca, Maria J. Rodriguez and Andrew …
Alexandru Lupsasca, Maria J. Rodriguez and Andrew Strominger Center for the Fundamental Laws of Nature, Harvard University, Cambridge, MA 02138, U.S.A. E-mail: …

Unlocking the Success of Alex Lupsasca: A Deep Dive into His …
Chapter 1: Alex Lupsasca's Career Trajectory: Detailed analysis of his career path, highlighting key projects and accomplishments. Chapter 2: Principles of Success: Exploration of his …

Alex Lupsasca (book)
Alex Lupsasca: Lectures on the Infrared Structure of Gravity and Gauge Theory Andrew Strominger,2018-03-06 A short graduate ... general relativity Alex Rider, Band 5: Scorpia …

Aspects of General Relativity - sites.lafayette.edu
Alex Lupsasca, Harvard University Pengzi Miao, University of Miami Prahar Mitra, Harvard University Lorenzo Sironi, Harvard University Jared Speck, MIT Mu-Tao Wang, Columbia …

Why there is no Love in black holes - arXiv.org
Jun 6, 2025 · Alex Lupsasca1 1Vanderbilt University This paper presents a new conformal symmetry of stationary, axisymmetric Kerr perturbations. This symmetry is exact but non …

BLACK HOLE MIMICKERS
March 3 — 5, 2025 407 Jadwin Hall, Princeton University Organizers: Suvendu Giri, Luis Lehner, Nils Siemonsen, George Wong BLACK HOLE MIMICKERS

Whythereis noLoveinblack holes
Alex Lupsasca1 1Vanderbilt University This paper presents a new conformal symmetry of stationary, axisymmetric Kerr perturbations. This symmetry is exact but non-geometric (or …

‘We’re building a telescope bigger than Earth’ - lupsasca.com
Alex Lupsasca: To observe a tiny object in the sky, you need to resolve rays that are very close to each other. If you have a bigger telescope dish, then you can bounce them off the dish and …

Research team discovers path to razor-sharp black hole …
"Black hole physics has always been a beautiful subject with deep theoretical implications, but now it has also become an experimental science," says Alex Lupsasca from the Harvard …

Black Hole Mimickers
“Gravitational wave observations of black hole mimickers: where do we look, and what do we look for?” “The Butler Didn't Do It! Three Clues on Exotic Compact Objects” “How does a …

Black Holes from A to Z - lupsasca.com
also discussed. These notes are prepared by Yichen Shi, Prahar Mitra, and Alex Lupsasca, with all illustrations by Prahar Mitra. 1

Polarization Whorls from M87 at the Event Horizon Telescope
Black hole physics is now an experimental science! The Event Horizon Telescope will soon deliver the first up-close pictures of two black holes: the one at the center of our Galaxy …

Applications of space-time symmetries to black holes and
Edoardo Lauria, Alex Lupsasca, Achilleas Porfyriadis, Marco Scalisi, Alberto Sesana, Yichen Shi. I deeply benefitted from discussions with all of you. I will have a great memory of these four …

“Lensing and Wave Optics in Strong Gravity”
11:45 – 12:15 Alex Lupsasca (Vanderbilt U, Nashville) The Black Hole Photon Ring 12:30 – 14:30 Lunch Break 14:30 – 15:00 Graham Smith (U of Birmingham) Multi-messenger gravitational …

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Gravitation Early Career Scientist Prize to Dr. Alex Lupsasca of the Vanderbilt University. The citation reads "For studies of the universal properties and observational signatures of black …

Lensing by Kerr black holes - Physical Review Link Manager
Feb 14, 2020 · In this paper, we unite our perspectives on the problem and signi cantly generalize these results, with the aim of presenting a complete guide to understanding lensing by Kerr …

Null geodesics of the Kerr exterior - Physical Review Link …
Feb 14, 2020 · We then solve the equations using Jacobi elliptic functions, providing the complete set of null geodesics of the Kerr exterior as explicit parameterized curves. Null geodesics form …

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Universal polarimetric signatures of the black hole photon ring
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A d v a n ced E lectro d y n a m ics F a ll 2 0 2 3 - lupsasca.com
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Dissertation Advisor: Daniel Louis Ja eris Ping Gao Traversable Wormholes and Regenesis Abstract In this dissertation we study a novel solution of traversable wormholes in the context of

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Alex Lupsasca1 1Vanderbilt University This paper presents a new conformal symmetry of stationary, axisymmetric Kerr perturbations. This symmetry is exact but non-geometric (or …

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From Petrov-Einstein to Navier-Stokes Citation Lysov, Vyacheslav. 2014. From Petrov-Einstein to Navier-Stokes. Doctoral dissertation, Harvard University. Permanent ...

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Aspects of string field theory Citation Cho, Minjae. 2021. Aspects of string field theory. Doctoral dissertation, Harvard University Graduate School of Arts and Sciences. Link htt

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P h y sics 1 0 2 0 P h y sics fo r F u tu re L ea d ers
C la ss a tten d a n ce: I w ill n ot take atten d an ce, b u t it is im p ortant to atten d th e lectu re for a variety of reason s: (1) S om e m aterial w ill b e d iscu ssed at greater len gth th an is given …

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From Petrov-Einstein to Navier-Stokes The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Lysov, V

HARVARD UNIVERSITY Graduate School of Arts and Sciences …
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Null geodesics of the Kerr exterior - Physical Review Link …
Feb 14, 2020 · The Null Geodesics of the Kerr Exterior Samuel E. Gralla1, and Alexandru Lupsasca2,3, y 1Department of Physics, University of Arizona, Tucson, Arizona 85721, USA …

Universal interferometric signatures of a black hole’s photon …
Johnson et al., Sci. Adv. 2020 6 : eaa1310 18 March 2020 SCIENCE ADANCES | RESEARCH ARTICLE 3 of 8 To summarize, the photon shell is the spacetime region r − ≤ r ≤ r − ≤ ≤ , 0 ≤ < …

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2 drafted this manuscript while he was in Washington, D.C., between 1919 and 1924 as aide-de-camp to General of the Armies John J. Pershing. However, given the growing bitterness of the …

Photon Rings Around Warped Black Holes - arXiv.org
Photon Rings Around Warped Black Holes Daniel Kapec,1,2, Alexandru Lupsasca,3, yand Andrew Strominger2, z 1Center of Mathematical Sciences and Applications, Harvard …

PHYSICAL REVIEW D 102, 124004 (2020) - repository.arizona.edu
The shape of the black hole photon ring: A precise test of strong-field general relativity Samuel E. Gralla ,1,* Alexandru Lupsasca ,2,3,† and Daniel P. Marrone 4,‡ 1Department of Physics, …

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Lensing by Kerr black holes - Physical Review Link Manager
Feb 14, 2020 · Samuel E. Gralla and Alexandru Lupsasca Phys. Rev. D 101, 044031 — Published 14 February 2020 DOI: 10.1103/PhysRevD.101.044031. Lensing by Kerr Black …

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Lensing by Kerr black holes - repository.arizona.edu
†lupsasca@fas.harvard.edu 1We use the term “photon ring” to describe the collection of demagnified images that appear near a closed curve on the image plane. When optically thin …

P h y sics 1 0 2 0 P h y sics fo r F u tu re L ea d ers
C la ss a tten d a n ce: I w ill n ot take atten d an ce, b u t it is im p ortant to atten d th e lectu re for a variety of reason s: (1) S om e m aterial w ill b e d iscu ssed at greater len gth th an is given …

Observing the Inner Shadow of a Black Hole: A Direct View of …
2019; Gralla & Lupsasca 2020a; Johnson et al. 2020). Hence, in models featuring a spherically symmetric and optically thin emission region, the image brightness also diverges logarith …

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From Petrov-Einstein to Navier-Stokes The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Lysov, V

Black Hole Glimmer Signatures of Mass, Spin, and Inclination
Black Hole Glimmer Signatures of Mass, Spin, and Inclination George N. Wong1,2 1 Illinois Center for Advanced Studies of the Universe, Department of Physics, University of Illinois, …

Lensing by Kerr Black Holes - arXiv.org
Lensing by Kerr Black Holes Samuel E. Gralla1, and Alexandru Lupsasca2,3, y 1Department of Physics, University of Arizona, Tucson, Arizona 85721, USA 2Center for the Fundamental …

The Shape of the Black Hole Photon Ring: A Precise Test of …
The Shape of the Black Hole Photon Ring: A Precise Test of Strong-Field General Relativity Samuel E. Gralla,1, Alexandru Lupsasca,2,3, yand Daniel P. Marrone4, z 1Department of …

Images and photon ring signatures of thick disks around …
A&A 667, A170 (2022) hereafterGLM 20;Wielgus2021). A recent proposal to mea-sure the precise shape of the n = 2 photon ring (formed by light that executes a full orbit around the black hole …

The Maximally Rotating Black Hole as a Critical Point in …
Contents 0 Introduction 1 1 CriticalBehaviorofNear-HorizonFieldsandParticles 8 1.1 Introductionandsummary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

P h y sics 8 1 6 0 : G en era l T h eo ry o f R ela tiv ity S p rin g …
P h y sics 8 1 6 0 : G en era l T h eo ry o f R ela tiv ity S p rin g 2 0 2 4 T u esd ay / T h u rsd ay 1 1 a m -1 2 :1 5 p m S tev en so n 6 -1 0 5

A d v a n ced E lectro d y n a m ics F a ll 2 0 2 3 - lupsasca.com
P h y sics 8 0 2 1 : A d v a n ced E lectro d y n a m ics F a ll 2 0 2 3 T u esd ay / T h u rsd ay 1 1 a m -1 2 :3 0 p m S tev en so n 6 -6 3 8 In stru cto r: A lex L u p sasca, alexan d ru .v.lu p …

Null Geodesics of the Kerr Exterior - arXiv.org
Null Geodesics of the Kerr Exterior Samuel E. Gralla1, and Alexandru Lupsasca2,3, y 1Department of Physics, University of Arizona, Tucson, Arizona 85721, USA 2Center for the …

Particle motion near high-spin black holes - arXiv.org
Particle motion near high-spin black holes Daniel Kapec1, and Alexandru Lupsasca2,3, y 1School of Natural Sciences, Institute for Advanced Study, Princeton, NJ 08540, USA 2Center for the …

repository.arizona.edu
MNRAS 475, 3829–3853 (2018) doi:10.1093/mnras/sty039 Advance Access publication 2018 January 9 Observational signature of high spin at the Event Horizon Telescope ...

Photon Rings Around Warped Black Holes - arXiv.org
Photon Rings Around Warped Black Holes Daniel Kapec,1,2, Alexandru Lupsasca,3, yand Andrew Strominger2, z 1Center of Mathematical Sciences and Applications, Harvard …

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From Petrov-Einstein to Navier-Stokes (Article begins on next page) The Harvard community has made this article openly available. Please share how this access benefits you. Your s

τ arXiv:2406.04176v2 [astro-ph.HE] 18 Sep 2024
Explanation for the absence of secondary peaks in black hole light curve autocorrelations Alejandro Cárdenas-Avendaño ,1,2, ∗Charles Gammie ,3, †and Alexandru Lupsasca 4, ‡ …

Note on bunching of field lines in black hole magnetospheres
Samuel E. Gralla, Alexandru Lupsasca,yand Maria J. Rodriguezz Center for the Fundamental Laws of Nature, Harvard University, Cambridge 02138, MA USA Numerical simulations of …

Images and photon ring signatures - arXiv.org
Astronomy & Astrophysics manuscript no. M87 'ESO 2022 July 29, 2022 Images and photon ring signatures of thick disks around black holes Frederic H. Vincent1, Samuel E. Gralla2, …

ResearchGate
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The inner shadow of a black hole: A direct view of the event
Image credit: Gralla & Lupsasca 2019 Emission in Equatorial Plane observer. Photon Rings Image credit: Johnson+ 2019 Simulation Credit: George Wong - As geodesics wrap around …

Alexandru Lupsasca, Maria J. Rodriguez and Andrew …
Alexandru Lupsasca, Maria J. Rodriguez and Andrew Strominger Center for the Fundamental Laws of Nature, Harvard University, Cambridge, MA 02138, U.S.A. E-mail: …