(videos of the talks at the bottom). Abstract: Open quantum systems are of experimental interest since ideally real life experiments always have some interaction with its environment. Abstract: We will discuss how dualities of quantum field theories can be understood as analogous to Morita equivalences for algebras of various types. Physically, flow treesprovide a mesoscopic representation of BPS states as nested multi-centered bound states of elementary constituents. Any other way wouldn't be as efficient. [Slides]. In other words, the string boundary conditions on the probe branes preserve the integrability of the corresponding Green-Schwarz sigma models. Juan Maldacena Berkeley Informal String-Math Seminar. Anyway, truly bold attempt! We present a novel construction of such flux vacua in permutation-symmetric multiparameter compactifications, and develop methods for efficiently computing the zeta functions of the corresponding geometries. This is based on joint work with Raghavendran. 3. There are many equivalent graphs that are related by Kirby moves which are interpreted as integrating out gauge nodes from the perspectives of 3d theories. Wittens answer is that this was just a vague hope, that the duality ideas are now 25 years old, we havent progressed beyond them, need something new. Im posting this since I thought it could be useful for those very busy hep-ph physicists who may wish to go directly to (what I & surely many others) considers as the key moment from perspective lectures. The latter approach allows to realize holomorphically and topologically twisted field theories directly as worldvolume theories in deformed supergravity backgrounds, and we make extensive use of this. Still, I think the best choice you can make is to use eval, given that you're able to trust the source of the string. If youre so concerned about the public or physics community getting misled, surely youve contacted the organizers of and participants in the conferences Outreach activities. We introduce a. new idea, boundary averaging, to address the question: Does averaging also work well in AdS/BCFT? Please, no more about the only string theory can compute the Black Hole entropy arguments. When the quiver comes from a smooth local toric Calabi-Yau 3-fold, we obtain a generalization of shifted Yangian, which acts on the cohomology of the moduli space of certain sheaves of the 3-fold. We therefore relate differential and enumerative geometry, topology and geometric representation theory in mathematics, via a maximally-supersymmetric topological quantum field theory with electric-magnetic duality in physics. So please stop it with this idea that criticising string theory, as Peter does, is not good nor an honest way to communicating about science. Progress in D=4, N=2 Field Theory, Strings-Math 2012, Bonn, July 2012 Powerpoint presentation here . Workshop on Algebraic Geometry and Machine Learning, Tsinghua Sanya International Mathematics Forum, January 2021. We revisit this construction, working directly in the setting of the holomorphically twisted theory and viewing the topological twists as further deformations. I think I was doing him a favor by not quoting that kind of thing, which he really should be embarrassed about. Organizing Committee:Henrique Bursztyn (IMPA)Reimundo Heluani (IMPA)Marcos Jardim (IMECC-UNICAMP)Gonalo Oliveira (UFF) Scientific Committee:Anton Alexeev (Universit de Genve)David Ben-Zvi (University of Texas)Alexander Braverman (Brown University)Ron Donagi (University of Pennsylvania)Giovanni Felder (ETH Zrich)Dan Freed (University of Texas)Edward Frenkel (University of California)Marco Gualtieri (University of Toronto)Nigel Hitchin (University of Oxford)Sheldon Katz (University of Illinois)Maxim Kontsevich (IHS)David Morrison (University of California)Andrei Okounkov (Columbia University)Vasily Pestun (IHS)Boris Pioline (Sorbonne Universit \u0026 CNRS)Nicolai Reshetikhin (University of California)Pedro Vieira (Perimeter Institute for Theoretical Physics)Katrin Wendland (Albert-Ludwigs-Universitt Freiburg)Edward Witten (Institute for Advanced Study)Shing-Tung Yau (Harvard University \u0026 The Chinese University of Hong Kong)Maxim Zabzine (Uppsala University)Steering Committee: Ron Donagi (University of Pennsylvania)Dan Freed (University of Texas at Austin)Nigel Hitchin (University of Oxford)Sheldon Katz (University of Illinois)Maxim Kontsevich (IHS)David Morrison (University of California)Hiroshi Ooguri (Caltech \u0026 IPMU)Boris Pioline (Universit Pierre et Marie Curie)Joerg Teschner (DESY)Edward Witten (Institute for Advanced Study)Shing-Tung Yau (Harvard University)Redes Sociais do IMPA: https://linktr.ee/impabrIMPA - Instituto de Matemtica Pura e Aplicada https://impa.br | http://impa.br/videos#stringmath2021 Os direitos sobre todo o material deste canal pertencem ao Instituto de Matemtica Pura e Aplicada, sendo vedada a utilizao total ou parcial do contedo sem autorizao prvia e por escrito do referido titular, salvo nas hipteses previstas na legislao vigente.The rights over all the material in this channel belong to the Instituto de Matemtica Pura e Aplicada, and it is forbidden to use all or part of it without prior written authorization from the above mentioned holder, except in the cases prescribed in the current legislation. . I will describe how to bootstrap these perturbative corrections without computing actual Feynman integralsand present some preliminary results for pure N=1 gauge theory. Lectures at St. Ottilien: Quantum Symmetries and K-Theory. How do I check if an array includes a value in JavaScript? What does "use strict" do in JavaScript, and what is the reasoning behind it? Abstract: We explore little string theories in six dimensions, constructed via F-theory that are dual to heterotic stringswith NS5 branes probing ADE type singularities. Title: Giant Gravitons in Twisted Holography Poor fool that I am, Title: Quantum duality and Morita theory for chiral algebras [online talk] My talk will be based on recent joint work with Baej Ruba. http://jsfiddle.net/vol7ron/6cdfA/. Yes, I was ignoring some other things they had to say, for example, Arkani-Hameds If people think carrying on this argument is a good use of their time, they are encouraged to do so elsewhere. Title: Cohomological-type Hall algebras and their representation theory Title: Langlands duality for 3-manifolds LQG calculations claim to reproduce the semi-classical limit. But this is just an opinion. Probably the best answer. The simplest example is the qubit. Piotr Kucharski (University of Amsterdam) Since it's online only, talks are much more accessible than usual (and since it's free, over 2000 people have registered to in principle participate via Zoom). 5. (Anyway, String Theory is mainly about Quantum Gravity). Abstract: Recently, higher categorical understandings of quantum field theories have been rapidly developing. We provide significant evidence that averaging plays an important role in reproducing. He never actually gets anywhere near discussing the topic of the title for the talks, but does give a very nice leisurely introduction to computing amplitudes for zero-mass particles. Nov 22-26, 2021: Higher structures in geometry and physics, Chern Institute of Mathematics, Nankai University 9. We provide significant evidence that averaging plays an important role in reproducingsemiclassical gravity in AdS/BCFT. This goes without saying all technically challenging fundamentally important problems required for superstring theory unification be at least mathematically self-consistent have been left unanswered. Knots and Natural Language. Strings 2021 started today, program is available here. We demonstrate the duality of quantum chaos quantities in the thermofield double state defined in a fermionic system. I think a better service to the public would be made by discussing things that are well established, rather that the permanent focus on what is coming/the future etc. You are either blinded or so convinced by the idea that string theory has nothing to say about Physics, that you pick any phrase that adds to your view of things. This construction gives rise to new quantum groups. But this procedure you adopted in this post, is not the best way of understanding science, or communicating it. [Slides] [Video], Brian Williams (University of Edinburgh) de Lausanne), [D] Nathan Seiberg (Institute for Advanced Study), [T] Ashoke Sen (Harish-Chandra Research Institute), [R]Shu-Heng Shao (Institute for Advanced Study), [T] Yuji Tachikawa (Kavli IPMU and U of Tokyo), [T] Gregory Tarnopolsky (Carnegie MellonU), [T] Gonzalo Torroba (Centro Atmico Bariloche), [D] Edward Witten (Institute for Advanced Study), [G] Ahmadullah Zahed (Bangalore Indian Inst. David Morrison (University of California) Abstract: I will present some conjectures for higher-rank K-theoretic Donaldson-Thomas theory on toric three-folds, and some lessons that we learned from working equivariantly on non-compact spaces. Elliott Gesteau (California Institute of Technology) Our conjecture, which we have developed with Ben-Zvi, Gunningham and Safronov, asserts an equality of dimensions between the G- and G^L-skein modules of a 3-manifold at generic quantization parameter. But, as has also been the case for many years, the conference features many talks that have nothing to do with string theory and may be quite interesting. It fully encodes the geometry, and a simple algorithm allows access to the structure of nested singularities, which corresponds physically to a generalized Higgs mechanism. Thanks for contributing an answer to Stack Overflow! Dear Peter, Following Nimas final recommendation, an experimentalist and a string theorist hang out together. CEIs should be thought of as a precise realization of the general idea, due to Kontsevich, that the category of open strings (plus data of the splitting) determine closed string invariants. An exchange that was otherwise quite lively and interesting, you paint in the worst possible way. If you want to be added to the seminar mailing list, use this link https . Thats interesting, can you give pointers? On the other hand, differential cohomology theories, whose relationships with physics are classical, are most modernly understood in terms of sheaves on manifolds with values in (\infty, 1)-categories. The CY manifolds admitting supersymmetric flux vacua can be associated to elliptic, Hilbert, or Bianchi modular forms, depending on the field the complex structure moduli of the CY take values in. Extending this story, I will talk about other physical realizations of analytically continued systems, such as Regge poles, replicas, or dimensional regularization. In particular, we provide two different path integral derivations of their wall-crossing formula for b_2^+(X)=1. As an example, we compute the trace evaluated on the unit constant chiral chain and obtain the formal Witten genus in the Lie algebra cohomology. Rio de Janeiro, RJ, CEP 22460-320, Brasil How to check whether a string contains a substring in JavaScript? - rgbk21. Abstract: I will discuss methods to numerically approximate Ricci-flat metrics for Calabi-Yau n-folds defined as complete intersections in toric ambient spaces. 3 years ago, F_K invariants of knot complements in 3-sphere have been proposed. Witten says something about a (possible) theory that is intrinsically quantum mechanical, which seems to mean a theory that does not start with a continuous field and quantise it, and which (therefore) presumably cannot be described in that way. Title: Bootstrapping AdS/BCFT Title: A Yang-Mills matrix theory Hirosi Ooguri (Caltech & IPMU) Inspired by definitions of abstract (finite) groups and algebras and their linear actions, we introduce a framework for these symmetries in field theory. Abstract: Twisted holography relates the 2d chiral algebra subsector of N = 4 SYM to the B-model topological string theory on the deformed conifold SL(2,C). You will have to use the Number.isNaN() method to do it. If you're looking for a syntactical equivalent to eval, you could use new Function. There are slight differences regarding scoping, but they mostly behave the same, including exposure to much of the same security risks: You can't, at most you could do something retort like parsing the numbers and then separating the operations with a switch, and making them. In this talk, we will explain how to compute concrete equations of mirrors to blow-ups of toric varieties in the framework of the GrossSiebert program. Zhengping Gui (International Centre for Theoretical Physics) IMPA, Rio de Janeiro, June 14 18, 2021 Turned into an online event. Abstract: Quantum curves can be associated with the singular vectors in the Verma modules over the Virasoro algebra. Abstract: The sphere packing problem is a very natural geometric question and it has a long and exciting history. Abstract: This talk summarizes recent developments aimed towards F-theory constructions of MSSMs, i.e. A ternary string is a sequence of n symbols that has some of the digits 0, 1, 2. 1 Let n be a natural number, n3. These operators are interesting for several reasons: [Slides], Alex S. Arvanitakis (Vrije Universiteit Brussel) Quantum physics studies the smallest objects in the universelike atoms and subatomic particleswhile general relativity typically focuses on larger-scale objects in the universe. Title: Knizhnik-Zamolodchikov revisited: (non)supersymmetric gauge theories, defects, and localization Title: Algebras and Entropies This is enabledby thesurprisingappearanceof a Penner-like matrix model whose spectral curve turns out to give a Strebel differential. Abstract: Gauge-String duality(or the AdS/CFT correspondence, as a special case) has wide ranging ramifications in physics as well as mathematics. [Video], Hulya Arguz (IST Austria) Likely Witten was thinking of things like the 6d (2,0) superconformal theory which has not classical limit and its construction is somewhat mysterious. I notice that Roger Penrose, a well-know string theory skeptic, will be giving a talk on the last day of the conference next week. Green and Witten, recto and verso Title: Families of Modular Flux Vacua on Symmetric CY Threefolds This is joint work with Mark Gross. Enjoy, This solution also clips whitespaces and checks for duplicating operators, e.g. ' The video is available here , and . In this talk, we will discuss recent progress in constructing explicit examples of higher-categories describing non-invertible symmetries in quantum field theories of various spacetime dimensions ranging from d=3 to d=6. Enter your email address to subscribe to this blog and receive notifications of new posts by email. This is a joint work with Kwokwai Chan and Ziming Ma. We engineer these models using toric geometry techniques to construct non-compact threefolds that manifestly have multiple fibrations and hence M/F-theory lifts. [Slides], Martin Bies (University of Pennsylvania) Youre right that I was cherry-picking, but in the sense of ignoring the huge amount of hype about what great progress was being made, and sticking to writing about certain places where people like Arkani-Hamed or Witten chose to address the real problems (which most of the time are studiously ignored). [Slides], Aranya Bhattacharya (IISc, Bangalore) String Math 2021 - Si Li (Tsinghua University) 848 views Jun 15, 2021 27 Dislike Share Instituto de Matemtica Pura e Aplicada 100K subscribers The resulting quiver Yangians, together with their trigonometric and elliptic versions, unify various known results and generalize them to a much larger class. Interestingly, most of the structures uncovered have a fractal boundary at infinity, which possesses a rich geometric structure. It's december of 2021, and the java world has been rattled by a log4j vulnerability. The powerpoint is here in powerpoint and here in pdf . One can define correlation functions and derive conformal bootstrap equations constraining the spectrum. Suomynona, [Slides] [Video], Pierrick Bousseau (ETH Zrich) Ive personally never understood why showing that (unphysical limits of) your quantum theory gives the expected semi-classical result is anything other than a rather weak consistency check on your theory. Cookies and PrivacyAboutEventsNews How do I replace all occurrences of a string in JavaScript? It is expected that the right mathematical structure to capture physical properties of such symmetries is that of higher-categories. He lists two main things we know about the supposed theory: 1. Goodbye eval()! Local nodes will be coordinated worldwide for the joint viewing of talks and discussion sessions, and online satellite meetings during other time periods will be linked on this webpage. Talks are available for watching every day via Youtube, links are on the main page. Strings 2022 Summary Talk. Nikita Nekrasov Is a PhD visitor considered as a visiting scholar? Abstract: In this talk, I will revisit the construction of heterotic ALE instantons and the corresponding T-dual systems in 6D little string theories (LSTs). How do I connect these two faces together? Robert A. Wilson, Theres a long list of things they are talking about under the name string theory, with the generic problem that the ones that are reasonably well-defined have nothing to do with the real world (e.g., wrong dimension).