Conférences  >  Physique  >  Physique mathématique

The purpose of this interdisciplinary workshop is to investigate connections between various fields of theoretical physics, in particular string theory and statistical models of crystals, and the theory of automorphic forms, mock modular forms and beyond. The non-perturbative structure of string theory has led to new uses of automorphic forms that have already appeared in number theory, as well as new exotic automorphic objects that have not yet been encountered.

ICTP South American Institute for Fundamental Research

The AdS/CFT correspondence, first proposed by Juan Maldacena in 1997, relates purely field theoretic models (in the absence of gravity) with a gravitational theory (usually embedded in string theory) in a higher dimension, the correspondence being holographic in nature. Since it is a duality, such that a perturbative model on one side corresponds to a nonperturbative one on the other, it has been applied to understand a multitude of interesting nonperturbative problems, in various areas of theoretical physics.

The Holography@25 will take place at the ICTP-SAIFR in São Paulo, Brazil, and there will be a School (June 5-13, 2023) and a Workshop (June 14-17, 2023). Candidates may apply either for one or both activities.

Cours et événements pour étudiants en physique,    Physique des hautes énergies, des particules et des champs

Oberlin College

International Union of Crystallography | Commission on Mathematical and Theoretical Crystallography

The school provides a solid introduction to point- and space-group symmetry. It introduces some of the structural tools available at the Bilbao Crystallographic Server as well as Jana2020 software for structure solution and refinement. Lectures are accompanied by paper and computer exercises.

Physique appliquée: Rayonnement synchrotron et rayons X, cristallographie,    Cours et événements pour étudiants en physique

Mainz Institute for Theoretical Physics, Johannes Gutenberg University

Recent work by physicists has uncovered a conjectural relationship between the enumerative invariants of noncompact Calabi-Yau geometries and the spectra of quantum curves. In certain limits, this connection may be recast in terms of zeroes and limits of higher normal functions, which are generalized periods arising from algebraic K-theory. Other interpretations and applications abound, in contexts ranging from integrable systems to resurgence theory. This workshop will be the first time that an interdisciplinary group of researchers working on this topic from various perspectives has been convened. The organizers expect it to generate new insights and new research liaisons among the attendees.

Algèbre,    Géométrie et topologie

Dept. of Mathematics, Stockholm University, SWEDEN

Marcus Wallenberg Symposium in memory of SERGEY NABOKO

Mathématiques appliquées (en général),    Analyse

The meeting covers the whole field of Lie Theory in its widest sense together with its applications in many facets of physics. As interface between mathematics and physics the workshop serves as a meeting place for mathematicians and theoretical and mathematical physicists.

Algèbre,    Mathématiques appliquées (en général)

ETH Zürich (Switzerland)

Nordita, Stockholm (Sweden)

This Nordita program is devoted to amplitudes- and QFT-inspired analytic methods for gravity at all scales. The topics covered will include: recent progress for gravitational amplitudes, new perturbative/effective formalisms, and relations between gravity and gauge theory. Higher-order calculations for: post-Newtonian/Minkowskian and self-force corrections to the gravitational potential/wave emission, cosmological correlators and ultraviolet physics probing quantum gravity, and applications to string theory. Challenges of incorporating spin and tidal effects in general relativity, and scattering amplitudes for Kerr black holes. Flat space holography in the form of celestial amplitudes, asymptotic symmetries and gravitational memory.

University of Melbourne

This annual conference aims to cover the most important recent developments at the interface between string theory, quantum field theory and mathematics, while keeping a rough balance between physics and mathematics, stimulating interactions between the two communities.

The past decade have seen important progress by mathematicians and physicists alike on a class of geometric objects called symplectic singularities. On the math side, they lie at the crossroad between algebraic geometry and representation theory, while from the physical perspective they arise as moduli space for supersymmetric quantum field theories. As such, they can be studied using tools from string theories and branes. The first week will be a summer school, the second week will be a workshop. Participants can attend the first week, the second week, or both.

Physique des hautes énergies, des particules et des champs,    Cours et événements pour étudiants en physique

APCTP, Pohang (Korea)

The program aims at bringing together different communities of theoretical physicists who are working on numerical methods to investigate those types of questions. Cross-fertilizing ideas and finding common ground should inspire new ways of thinking about these problems and stimulate more rapid progress.

Mainz Institute for Theoretical Physics (Germany)

Much of the recent work and progress in CFTs has been at zero temperature and it is highly desirable to extend this to finite temperature/finite size systems. This is not only dictated by the obvious relevance of finite temperature systems to the real world, but also by important theoretical questions. This includes fundamental issues regarding the thermalisation process of quantum systems, the holographic description of black holes in terms of finite temperature CFTs, and the intriguing relationship between thermal CFT partition functions and modular functions. Although disparate at first sight, these areas are converging to a common theme involving the study of thermal CFT correlation functions.

Banff International Research Station (BIRS) / UBCO

This workshop will study this question for systems of geometric origin. One example of this is a particle bouncing inside a region -- think of a ball bouncing around a billiard table, or a light beam bouncing around a room whose walls are mirrors. If the walls are flat then the behavior is fairly predictable, but if they are curved then one often observes random-looking behavior in the long run. Or imagine walking in a straight line along a surface; if the surface is flat then changing the starting point a little will lead to a predictable change in the trajectory. However, if the surface is curved like a saddle then different trajectories will spread out and your location after walking for a long time will eventually seem to be random. The task of giving precise descriptions of systems such as these requires a more complete development of the theory of thermodynamic formalism for systems of geometric origin, which is precisely the goal of this workshop.

The past decade have seen important progress by mathematicians and physicists alike on a class of geometric objects called symplectic singularities. On the math side, they lie at the crossroad between algebraic geometry and representation theory, while from the physical perspective they arise as moduli space for supersymmetric quantum field theories. As such, they can be studied using tools from string theories and branes. The first week will be a summer school, the second week will be a workshop. Participants can attend the first week, the second week, or both.

The Domoschool 2023 edition wants to focus on these issues: one of the most debated current topics in the scientific environment concerns the dynamics of galaxies. The problem concerns both the cosmological scales, given that the galaxies appear to move away from each other with increasing acceleration, and the galactic scales since the gases that form the surrounding halo appear to rotate around each galaxy at a much greater speed than predicted by the Newton's theory of gravitation.

Event Secretariat;     Tél.: [+39 388 984 3952];     Email.: domoschool@arsunivco.eu

Dark matter, MOND, Einstein's equations, gluing theorems

Astronomie, astrophysique et cosmologie,    Géométrie et topologie

The XII. International Symposium on Quantum Theory and Symmetries (QTS12) will be held at Czech Technical University in Prague, Czech Republic, from Monday July 24 until Friday July 28, 2023. The Symposium series “Quantum Theory and Symmetries” (QTS) is a biannual meeting intended for physicists and mathematicians who are either applying symmetries to some physical model, or are studying mathematical objects that are relevant for physical applications.

Mathématiques appliquées (en général),    Mécanique quantique et l'information quantique

Prague University (Czech Republic)

Conference ISQS27 will be organized as a sub-event of QTS12 (XII. International Symposium Quantum Theory and Symmetries) by Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague on July 24 – 28, 2023.

The XXVIIth International Conference on Integrable Systems is one of a series of annual meetings held at the Czech Technical University since 1992 and is devoted to problems of mathematical physics related to the theory of integrable systems, quantum groups and quantum symmetries. During the last 3 years each of the conferences gathered each year around 100 scientists from all over the world.

Durham University (UK)

There has been significant recent progress in understanding deformations of integrable string sigma models, their relation to non-abelian and Poisson-Lie duality, and their possible AdS/CFT interpretation in terms of non-commutative field theory. These models can also be naturally recast in terms of double and exceptional field theory. Numerous interesting connections between these research areas are developing, promising to shed light on important open questions.

Perimeter Institute for Theoretical Physics, Waterloo (Canada)

The Perimeter Institute for Theoretical Physics is delighted to host the 33rd installment of Strings, the flagship annual conference for the extended string theory community.

The next European conference on few-body problems in physics (EFB25) will be held in Mainz, Germany, from July 30th to August 4th, 2023. This will be the 25th edition of this conference series, which has previously taken place in Guildford (2019), Aarhus (2016), Krakow (2013), Salamanca (2010), and Pisa (2007). Like the previous conferences, this conference will give the possibility to present and discuss recent developments in the field of few-body systems, i.e., systems which can be understood in terms of a few degrees of freedom.

This Conference will focus on recent developments in the field of few-body systems in the following areas: Hadron physics; Nuclei and hypernuclei ; Electroweak processes; Nuclear astrophysics; Cold atoms and quantum gases; Atoms and molecules; Few-body methods; Few-body aspects of many-body systems

Physique nucléaire,    Physique atomique et moléculaire

A Meeting on the Mathematical and Physical Aspects of Non-Hermitian Operators, PT-Symmetry, PT-Optics, Exceptional Points, Spectral Singularities, Indefinite-Metric Theories, Open Quantum Systems, and Resonances

Casa Matemática Oaxaca (CMO)

This workshop on pathological behaviors of solutions to fluid equations brings together experts in mathematical fluid mechanics to discuss recent exciting developments in this direction from the mathematical point of view, as well as their relevance to turbulence.

Géométrie et topologie,    Algèbre

From a modern point of view, quantum field theory associates to every symmetry a topological defect, which acts on local and extended observables. This understanding has recently led to the discovery of new higher notions of symmetry, which in turn has shed new light on some of the most mysterious and profound phenomena described by quantum field theory, including color confinement in non-abelian gauge theories and duality. The deep link between symmetry and topology finds its natural expression in the mathematics of topological quantum field theory, such as the modular tensor categories that describe invariants of knots and the long-distance physics of anyons. Recent advances have centered on the rich categorical structure of various defects and how it encodes the fundamental idea of locality, as expressed by the cobordism hypothesis.

Physique des hautes énergies, des particules et des champs,    Cours et événements pour étudiants en physique

Galileo Galilei Institute For Theoretical Physics

Physique des hautes énergies, des particules et des champs,    Accélérateurs de particules

Mathematisches Forschungsinstitut Oberwolfach (MFO, Oberwolfach Research Institute for Mathematics)

Simulation,    Physique numérique

The aim of the topical workshop is to bring together particle physicists, string theorists and mathematicians working on elliptic and higher functions, with the goal of providing a framework for fruitful discussions bridging between different languages and approaches in physics and mathematics.

The MEDEX meeting is organized by the Institute of Experimental and Applied Physics, Czech Technical University in Prague (Czech Republic); by the University of La Plata (La Plata, Argentina) and by the University of Jyväskylä (Jyväskylä, Finland) each second year since 1997.

MEDEX (Matrix Elements for the Double beta decay EXperiments) conference is dedicated to the presentation of different methods of nuclear matrix elements (NME) calculations in connection with the nuclear double beta decay processes.

Physique nucléaire,    Physique des hautes énergies, des particules et des champs

Mathematisches Forschungsinstitut Oberwolfach (MFO, Oberwolfach Research Institute for Mathematics)

Mécanique quantique et l'information quantique,    Physique des hautes énergies, des particules et des champs

Banff International Research Station (BIRS) for Mathematical Innovation and Discovery

Most of the many discrete optimization problems arising in the sciences, engineering, and mathematics are NP-hard, that is, there exist no efficient algorithms to solve them to optimality, assuming the conjecture that P does not equal NP. The area of approximation algorithms focuses on the design and analysis of efficient algorithms that find solutions that are within a guaranteed factor of the optimal one. Loosely speaking, in the context of studying algorithmic problems, an approximation guarantee captures the quality of an algorithm -- for every possible set of input data for the problem, the algorithm finds a solution whose cost is within this factor of the optimal cost. A hardness threshold indicates the difficulty of the algorithmic problem -- no efficient algorithm can achieve an approximation guarantee better than the hardness threshold assuming that P does not equal NP. Over the last two decades, there have been major advances on the design and analysis of approximation algorithms, and on the complementary topic of the hardness of approximation. The goal of the workshop is to focus on a few key topics that could lead to deep new results in the areas of approximation algorithms, combinatorial optimization, hardness of approximation, and proof complexity.

Physique numérique,    Algorithmes et structures de données

Galileo Galilei Institute For Theoretical Physics

Physique des hautes énergies, des particules et des champs,    Accélérateurs de particules

The high luminosity collected by the LHC experiments and the accurate theoretical predictions enable precise tests of the SM under unprecedented conditions. However, severe challenges need to be addressed in order to exploit this untapped potential. The vastness of the LHC data and the variety of possible measurements requires the exploration to be guided towards those quantities or differential distributions that can reveal new physics, compatibly with existing constraints, or that are expected to reveal new physics in concrete BSM scenarios. The possibility of predicting these observables with sufficient accuracy needs to be assessed, and ensured by precision calculations. Finally, experimental strategies need to be devised by which precise measurements are performed of the relevant observables.

Banff International Research Station (BIRS) for Mathematical Innovation and Discovery

The workshop is conceived in response to recent breakthroughs in physics and mathematics. One is the real quantization of Hitchin moduli spaces due to Gaiotto and Witten, and the other is a deformation quantization theory of Kontsevich and Soibelman that has achieved a vast mathematical foundation and generalization of topological recursion of Eynard and Orantin in random matrix theory. The vision of the organizers is that these two theories should be related through mirror symmetry. The workshop is organized to test this vision, and to explore its mathematical consequences.

Banff International Research Station (BIRS) for Mathematical Innovation and Discovery

Motivated by theoretical work that pointed to new opportunities, tremendous progress has been made over the past several years in using moiré superlattices formed from two-dimensional materials as a laboratory for the study of quantum materials. This development has opened up an exciting new scientific opening, one in which mathematics and theoretical physics have a very large role to play by identifying moiré systems that are likely to exhibit new or poorly understood electronic phenomena, by inventing mathematical methods that enable testable predictions of physical properties, and by unravelling the meaning of experimental observations.

Institute for Advanced Study in Mathematics (IASM) in Hangzhou, China

In 2009 a new direction in variational calculus was proposed, called Lagrangian multiform theory (also referred to as pluri-Lagrangian systems), which breaks with the conventional approach in a fundamental way: in this new theory the Lagrangian is no longer a simple function of the fields, but an extended object (a differential or difference p-form). Furthermore, the Lagrangian is not put in by hand, i.e. chosen on the basis of secondary considerations (such as requiring certain symmetries), but emerges itself as a solution of the principal variational equations. These equations come from varying both the fields (as in the conventional theory) as well as the hyper-surfaces over which the action is integrated in the space of independent variables. The theory forms unique departure from the standard picture, in that it forms the first least-action principle that merges variational calculus with the key integrability notion of 'multidimensional consistency' (which is the key property of integrable systems, comprising the class of remarkable model equations which allow for the coexistence of infinite families of equations on one and the same mathematical functions). The fast development of the theory in the last decade, establishing the basic principles of the classical theory, demonstrating the applications to integrable systems and making the first steps towards a quantum theory, make it very timely to have a meeting on this new subject. The ambition of this novel viewpoint on the least-action principle, possibly as a candidate for a new foundational principle of physics, compel to branch out to researchers working in fundamental physics.

In this program we plan to invite a critical mass of researchers with complementary expertise from across the mathematical physics, condensed-matter physics and string theory communities, to promote common interests and collaborations, discover and open up new directions, and in particular, to develop applications to realistic physical systems.

Integrability has played a central role in understanding non-perturbative QFTs quantitatively leading to important applications in condensed matter physics, mathematical physics and more recently, in string theory. There is considerable activity brewing at the interface of these areas. An important recent development is given by integrability-preserving deformations, which includes the TTbar deformation. This progress further expands the scope of integrability to a larger class of models. At the same time, it leads to new insights on fundamental concepts of 2d quantum field theories such as UV completeness and locality. Another promising and active approach toward nonperturbative physics is provided by duality. In particular, dualities found in the AdS/CFT correspondence and its extensions, known as holography, have provided new insights and exact results by employing exact methods such as integrability and localization. AdS/CFT integrability has inspired remarkable advances in the study of correlation functions, including single-trace operators and those involving D-brane in AdS. The techniques employed are closely connected to the study of finite- volume form factors, and of non-equilibrium dynamics in condensed matter physics. Interest in CFT correlators also connects with the conformal bootstrap program, to which integrability is poised to contribute. As examples of how this might happen, links between Calogero-Sutherland models and conformal blocks have been established; non-perturbative methods for computing OPE coefficients which combine numerical conformal bootstrap approach and integrability have been initiated. Exploring this rich web of connections, between different areas of physics and mathematical physics, is in its infancy.

Institute for Advanced Study in Mathematics (IASM) in Hangzhou, China

The Langlands Programme as we now know it was framed as a research agenda in the late 1960s. At the same time that the Nobel Prize was being awarded to Murray Gell-Mann "for his contributions and discoveries concerning the classification of elementary particles and their interactions," the Langlands Program predicted that the elementary particles of arithmetic -- L-functions -- should be classified by automorphic representations of algebraic groups. One of the pillars of the Langlands Programme is a conjecture, known as the local Langlands Correspondence, which is crucial to attaching complete L-functions to automorphic representations. The local Langlands Correspondence is now a theorem for automorphic representations of quasisplit classical groups by the work of James Arthur, relying on the work of many mathematicians. Arthur packets play a key role in this recent work. This conference gathers together experts on Arthur packets over global and local fields to cross-pollinate ideas and work on open problems.

Institute for Advanced Study in Mathematics (IASM) in Hangzhou, China

Vortex dynamics is at the heart of many unresolved problems in fluid mechanics and is also central to numerous applications in science and engineering. The goal of the proposed meeting is to survey the recent progress in this field focusing on applied mathematics aspects of both classical and emerging problems. We are planning to bring together about 40 researchers at different career stages working on various aspects of vortex dynamics, spanning applied mathematical analysis, scientific computing, physical modeling as well as scientific and engineering applications. A highlight of the workshop will be events designed to foster cross-fertilization between applied mathematics and different application areas.

Kavli Institute for Theoretical Physics (KITP)

While it is widely acknowledged that string theory provides a framework for addressing quantum gravitational (and even quantum field theoretic) questions, the precise nature of its organizational principle remains obscure. Nearly three decades ago, when the question “What is string theory?” was asked, the perturbative string worldsheet viewpoint played the starring role. Since then, the discovery of D-branes, string dualities, and the holographic AdS/CFT correspondence has had spacetime dynamics taking center-stage. Much insight has been gleaned from these developments. We now have, for example, a much broader class of string backgrounds with better control over compactifications; strong constraints on the low energy effective field theories; a plethora of gauge-string dualities as well as applications of holographic techniques to a wide class of physical problems; and new angles on semiclassical gravitational physics from a fruitful interplay with quantum information in holography. Together with an influx of new tools and techniques, we have a very rich set of perspectives that illuminate the subject we continue to call string theory. While all these developments are interesting in and of themselves, it is an opportune moment to attempt to synthesize these, often disparate, strands and arrive at a deeper answer to the question in the title.

Physique des hautes énergies, des particules et des champs,    Astronomie, astrophysique et cosmologie

Banff International Research Station (BIRS) for Mathematical Innovation and Discovery

Statistique, Théorie des jeux,    Cours et évènements pour étudiants en mathématiques

Fields Institute

This conference will bring together communities working on two-dimensional Conformal Field Theory (CFT) from different perspectives, some of which have had only limited interactions so far. We are thinking here specifically of the communities working on the probabilistic approach to CFT, the algebraic & geometric approach to CFT, the operator algebraic approach to CFT, and the theoretical physics approach to 2d CFT.

Physique des hautes énergies, des particules et des champs,    Géométrie et topologie

The international conference Loops ‘24 is the most recent in a long tradition of biennial meetings focused on loop quantum gravity and background independent approaches to quantum gravity. The conference will be held from Monday, May 6 through Friday, May 10, 2024, at the campus of Florida Atlantic University in Fort Lauderdale, Florida (USA). The program will feature morning plenary talks complemented by contributed talks. Plenary sessions will be held in the auditorium of the Broward County Main Library one block away from the campus. The conference will highlight recent developments in canonical loop quantum gravity, covariant loop quantum gravity (spin foams), and other approaches to quantum gravity, as well as applications to symmetry-reduced models, quantum cosmology, black holes in quantum gravity, and other topics. Foundational, mathematical, numerical and phenomenological aspects will be covered.

Gravitation and Cosmology

Astronomie, astrophysique et cosmologie,    Physique des hautes énergies, des particules et des champs

The International Symposium on Lattice Field Theory is an annual conference that attracts scientists from around the world. Originally started as a place for physicists to discuss recent developments in lattice gauge theory, the conference is now the largest of its type and has grown to cover strongly interacting phenomena in many contexts such as particle physics phenomenology and nuclear theory, as well as algorithms, code development and machine architectures.

Mathematisches Forschungsinstitut Oberwolfach (MFO, Oberwolfach Research Institute for Mathematics)

MIAPbP - Munich Institute for Astro-, Particle and BioPhysics an institute of the Excellence Cluster ORIGINS

Fertile common ground has emerged for the mathematical structures that control perturbative calculations in different domains of fundamental physics – quantum field theory, general relativity, and their extension to string theory. This program brings together experts in these various domains of physics, as well as mathematicians with expertise in higher-genus surfaces and Calabi-Yau periods. Through an in-depth exchange among these communities, we aim to: · trigger technology transfer for advancing the precision frontier in perturbative quantum field theory and string theory, leading to insights that will impact both phenomenology, such as collider and gravitational-wave physics, and formal theory, such as string dualities and holography; · chart a course towards new understanding of the role of special functions in high energy physics, opening new avenues to reformulate quantum field theory and string theory to manifest the similarities of their mathematical structures.

Physique des hautes énergies, des particules et des champs,    Cours et événements pour étudiants en physique

MIAPbP - Munich Institute for Astro-, Particle and BioPhysics an institute of the Excellence Cluster ORIGINS

Effective field theory (EFT) is a powerful tool for describing the physics of systems at different energy scales. In the context of colliders and gravitational waves, EFTs together with multi-loop precision computation techniques play an essential role in creating precise theoretical predictions that can be compared with empirical data. Recently it has become evident that similar methods and computational tools can be successfully applied to the seemingly different fields of collider and gravitational wave physics. This workshop will bring together experts to discuss the latest developments in theory and phenomenology.

Resummation for the LHC: precision frontier, new structures, and jet processes; EFT tools for fixed order calculations; Factorization theorems at leading and subleading power; EFTs and expansions for gravitational wave astronomy; Scattering amplitudes in the classical regime; Multi-loop integrals for gravitational physics.

Physique des hautes énergies, des particules et des champs,    Cours et événements pour étudiants en physique

Hausdorff Research Institute for Mathematics (HIM)

Physique des hautes énergies, des particules et des champs,    Cours et événements pour étudiants en physique