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Talk
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PSI 2018/2019 - Math for QFT - Lecture 5
Dan Wohns Perimeter Institute for Theoretical Physics
PIRSA:18080021 -
PSI 2018/2019 - Math for QFT - Lecture 4
Dan Wohns Perimeter Institute for Theoretical Physics
PIRSA:18080020 -
PSI 2018/2019 - Math for QFT - Lecture 3
Dan Wohns Perimeter Institute for Theoretical Physics
PIRSA:18080019 -
PSI 2018/2019 - Math for QFT - Lecture 2
Dan Wohns Perimeter Institute for Theoretical Physics
PIRSA:18080018 -
PSI 2018/2019 - Math for QFT - Lecture 1
Dan Wohns Perimeter Institute for Theoretical Physics
PIRSA:18080017
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Talk
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PSI 2018/2019 - Classical Physics - Lecture 4
PIRSA:18080012 -
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Talk
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Welcome and Opening Remarks
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Theo Johnson-Freyd Dalhousie University
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Andre Henriques University of Oxford
PIRSA:18080042 -
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N=1 supersymmetric vertex algebras of small index
Davide Gaiotto Perimeter Institute for Theoretical Physics
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Geometric Langlands: Comparing the views from CFT and TQFT
Joerg Teschner Deutsches Elektronen-Synchrotron DESY
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Cutting and gluing branes
David Nadler University of California, Berkeley
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The low-energy TQFT of the generalized double semion model
Arun Debray University of Texas - Austin
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Moduli of connexions on open varieties
Bertrand Toen Paul Sabatier University
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The Duistermaat–Heckman distribution for the based loop group
Lisa Jeffrey University of Toronto
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Talk
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PSI 2018/2019 - Lie Groups and Lie Algebras - Lecture 6
Tibra Ali Perimeter Institute for Theoretical Physics
PIRSA:18080008 -
PSI 2018/2019 - Lie Groups and Lie Algebras - Lecture 5
Tibra Ali Perimeter Institute for Theoretical Physics
PIRSA:18080007 -
PSI 2018/2019 - Lie Groups and Lie Algebras - Lecture 4
Tibra Ali Perimeter Institute for Theoretical Physics
PIRSA:18080006 -
PSI 2018/2019 - Lie Groups and Lie Algebras - Lecture 3
Tibra Ali Perimeter Institute for Theoretical Physics
PIRSA:18080005 -
PSI 2018/2019 - Lie Groups and Lie Algebras - Lecture 2
Tibra Ali Perimeter Institute for Theoretical Physics
PIRSA:18080004 -
PSI 2018/2019 - Lie Groups and Lie Algebras - Lecture 1
Tibra Ali Perimeter Institute for Theoretical Physics
PIRSA:18080003
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Talk
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Welcome and Opening Remarks
Lucien Hardy Perimeter Institute for Theoretical Physics
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Local quantum operations and causality
Robert Oeckl Universidad Nacional Autónoma De Mexico (UNAM)
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Towards synthetic Euclidean quantum field theory
Tobias Fritz Universität Innsbruck
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Almost quantum correlations violate the no-restriction hypothesis
Ana Belen Sainz Gdańsk University of Technology
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A device-independent approach to testing physical theories from finite data
Yeong-Cherng Liang National Cheng Kung University
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Entropy, Information and Order in Soft Matter
Entropy is a central and fundamental concept in statistical mechanics, but considerations of entropy remain far from routine, and exhibit non-trivial and surprising aspects, particularly in soft matter phenomena. Soft matter self-assembly is replete with subtle and fascinating entropic effects. Moving away from the conventional view of entropy as a measure of disorder, current trends in soft matter self assembly increasingly have focused on the connection to information and algorithmic complexity as relevant aspects. Whether organizational principles in non-equilibrium systems may be built around entropy like concepts is an unresolved open question. Transitions in disordered matter such as the glass transition and jamming centrally involve entropy. The nature of order present in seemingly amorphous structures have been explored with concepts of entropy and information. These are some themes that will be explored in the program.The goal of the program is to bring together researchers in...
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Entropy, Information and Order in Soft Matter
Entropy is a central and fundamental concept in statistical mechanics, but considerations of entropy remain far from routine, and exhibit non-trivial and surprising aspects, particularly in soft matter phenomena. Soft matter self-assembly is replete with subtle and fascinating entropic effects. Moving away from the conventional view of entropy as a measure of disorder, current trends in soft matter self assembly increasingly have focused on the connection to information and algorithmic complexity as relevant aspects. Whether organizational principles in non-equilibrium systems may be built around entropy like concepts is an unresolved open question. Transitions in disordered matter such as the glass transition and jamming centrally involve entropy. The nature of order present in seemingly amorphous structures have been explored with concepts of entropy and information. These are some themes that will be explored in the program.The goal of the program is to bring together researchers in...
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PSI 2018/2019 -Math for QFT (Wohns)
PSI 2018/2019 -Math for QFT (Wohns) -
PSI 2018/2019 - Classical Physics (Kubizniak)
PSI 2018/2019 - Classical Physics (Kubizniak) -
Higher Algebra and Mathematical Physics
Higher algebra has become important throughout mathematics physics and mathematical physics and this conference will bring together leading experts in higher algebra and its mathematical physics applications. In physics the term algebra is used quite broadly any time you can take two operators or fields multiply them and write the answer in some standard form a physicist will be happy to call this an algebra. Higher algebra is characterized by the appearance of a hierarchy of multilinear operations (e.g. A_infty and L_infty algebras). These structures can be higher categorical in nature (e.g. derived categories cosmology theories) and can involve mixtures of operations and co-operations (Hopf algebras Frobenius algebras etc.). Some of these notions are purely algebraic (e.g. algebra objects in a category) while others are quite geometric (e.g. shifted symplectic structures). An early manifestation of higher algebra in high-energy physics was supersymmetry. Supersymmetry makes quantum field theory richer and thus more complicated but at the same time many aspects become more tractable and many problems become exactly solvable. Since then higher algebra has made numerous appearances in mathematical physics both high- and low-energy. A tell-tale sign of the occurrence of higher structures is when classification results involve cohomology. Group cohomology appeared in the classification of condensed matter systems by the results of Wen and collaborators. Altland and Zirnbauer s "ten-fold way" was explained by Kitaev using K-theory. And Kitaev's 16 types of vortex-fermion statistics were classified by spin modular categories. All these results were recently enhanced by the work of Freed and Hopkins based on cobordism theory. In high energy physics cohomology appears most visibly in the form of "anomalies". The Chern--Simons anomaly comes from the fourth cohomology class of a compact Lie group and the 5-brane anomaly is related to a certain cohomology class of the Spin group. The classification of conformal field theories involves the computation of all algebras objects in certain monoidal categories which is a type of non-abelian cohomology. Yet another important role for higher algebra in mathematical physics has been in the famous Langlands duality. Langlands duality began in number theory and then became geometry. It turned into physics when Kapustin and Witten realized geometric Langlands as an electromagnetic duality in cN=4 super Yang--Mills theory. Derived algebra higher categories shifted symplectic geometry cohomology and supersymmetry all appear in Langlands duality. The conference speakers and participants drawn from both sides of the Atlantic and connected by live video streams will explore these myriad aspects of higher algebra in mathematical physics.
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Summer School on Gravitational-Wave Astronomy
This school is part of the annual ICTS summer schools on gravitational-wave (GW) astronomy. Recent observations of GW signals from coalescing binaries of black holes and neutron stars have firmly established the field of GW astronomy. The promise of GW astronomy to address foundational questions in physics and astrophysics has been widely recognized. Physicists and astrophysicists are now coming up with novel ways of using GW observations to understand a variety of questions in fundamental physics and astrophysics. Recognizing this, the school has started to include courses which are considered to be outside to the traditional scope of GW physics. This year’s school will involve four graduate-level courses: Exotic compact objects and their gravitational-wave signatures (Andrea Maselli, Instituto Superior Tecnico, Lisbon)Physics and astrophysics of electromagnetic counterparts of binary mergers (Kenta Hotokezaka, Princeton University) Dynamic formation of compact binaries in dense stell...
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Summer School on Gravitational-Wave Astronomy
This school is part of the annual ICTS summer schools on gravitational-wave (GW) astronomy. Recent observations of GW signals from coalescing binaries of black holes and neutron stars have firmly established the field of GW astronomy. The promise of GW astronomy to address foundational questions in physics and astrophysics has been widely recognized. Physicists and astrophysicists are now coming up with novel ways of using GW observations to understand a variety of questions in fundamental physics and astrophysics. Recognizing this, the school has started to include courses which are considered to be outside to the traditional scope of GW physics. This year’s school will involve four graduate-level courses: Exotic compact objects and their gravitational-wave signatures (Andrea Maselli, Instituto Superior Tecnico, Lisbon)Physics and astrophysics of electromagnetic counterparts of binary mergers (Kenta Hotokezaka, Princeton University) Dynamic formation of compact binaries in dense stell...
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PSI 2018/2019 - Lie Groups and Lie Algebras (Ali)
PSI 2018/2019 - Lie Groups and Lie Algebras (Ali) -
Foundations of Quantum Mechanics
The foundations of quantum mechanics have been revitalized in the past few decades by three developments: (i) the influence of quantum computation and quantum information theory (ii) studies of the interplay between quantum theory and relativity particularly the analysis of indefinite causal structure and (iii) proposals to reconstruct quantum theory from basic axioms. There have also been very interesting developments in understanding and classifying no=locality and contextuality using tools from sheaf theory and cohomology as well as operator algebras and category theory. The International Congress of Mathematical Physics is a natural forum for the discussion of these topics. In the past there have been satellite workshops on topics like Operator algebras and quantum statistical mechanics which also address fundamental issues. The modern study of quantum foundations is very much influenced and informed by mathematics: sheaf theory and cohomology category theory information theory convex analysis in addition to the continuing interest in operator algebras and functional analysis. The aim of the workshop is to bring together researchers who have made substantial contribution to the recent developments. The workshop will be held at Perimeter Institute over a five day period from July 30
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Integrable systems in Mathematics, Condensed Matter and Statistical Physics
This program aims to address various aspects of integrability and its role in the advancement of Mathematics, Mathematical Physics, Condensed Matter Physics and Statistical Mechanics. The scope of the proposed program is therefore highly interdisciplinary, being aimed at mathematicians and physicists who are working on different aspects of integrability. The purpose is to bring together experienced as well as young scientists, graduate students and postdoctoral fellows who are working on various aspect of quantum as well as classical systems in which integrability plays a paramount role.Dates:July 16 - July 27 (First Division: Integrable systems in Mathematics and Mathematical Physics)July 30 - Aug 10 (Second Division: Integrable systems in Condensed Matter / Statistical Physics)The above two divisions are only made just as a broad reference for gathering like-minded mathematicians and physicists. But, we aim to strongly encourage cross-disciplinary discussions throughout the 4 week pr...
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Quantum Fields, Geometry and Representation Theory
The power of symmetries lies at the heart of interaction between modern mathematics and theoretical physics. A classic instance of such an interaction is the parallel development of Quantum Mechanics and that of the theory of finite dimensional representations of complex semi-simple lie algebras in the early 20th century. Natural questions arising from physics served as motivation for the development of the mathematical theory. The initiation of the theory of infinite dimensional representations of non-compact groups was also motivated by the need to understand the Representation Theory of the Poincare Group, the symmetry group of Special Relativity.Quantum Theory and Representation Theory have since flourished independently but have continued to benefit from a cross fertilization of ideas. In recent years, there has been renewed interest in this interaction centered especially around various Supersymmetric Quantum Field Theories and Geometric aspects of Representation Theory. These t...
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Integrable systems in Mathematics, Condensed Matter and Statistical Physics
This program aims to address various aspects of integrability and its role in the advancement of Mathematics, Mathematical Physics, Condensed Matter Physics and Statistical Mechanics. The scope of the proposed program is therefore highly interdisciplinary, being aimed at mathematicians and physicists who are working on different aspects of integrability. The purpose is to bring together experienced as well as young scientists, graduate students and postdoctoral fellows who are working on various aspect of quantum as well as classical systems in which integrability plays a paramount role.Dates:July 16 - July 27 (First Division: Integrable systems in Mathematics and Mathematical Physics)July 30 - Aug 10 (Second Division: Integrable systems in Condensed Matter / Statistical Physics)The above two divisions are only made just as a broad reference for gathering like-minded mathematicians and physicists. But, we aim to strongly encourage cross-disciplinary discussions throughout the 4 week pr...