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. All, fiendish mathematics and mind-boggling . of Science), [T] Ying Zhao (Institute for Advanced Study), Luis Alday, Luis Alvarez-Gaume, Kostas Bachas, Micha Berkooz, Nathan Berkovits, Ruth Britto, Horacio Casini, Alejandra Castro, Mirjam Cvetic, Atish Dabholkar, Jan de Boer, Robbert Dijkgraaf, Johana Erdmenger, Mboyo Esole, Jim Gates, Jerome Gauntlett, Rajesh Gopakumar, Mariana Grana, Michael Green, David Gross, Daniel Grumiller, Jeff Harvey, Marc Henneaux, Veronika Hubeny, Marina Huerta, Janet Hung, Antal Jevicki, Clifford Johnson, Shamit Kachru, Igor Klebanov, Zohar Komargodski, Finn Larsen, Yolanda Lozano, Kimyeong Lee, Dieter Luest, Juan Maldacena, Shiraz Minwalla, Jeff Murugan, Rob Myers, Hirosi Ooguri, Leo Pando-Zayas, Silvia Penati, Fernando Quevedo, Eliezer Rabinovici, John Schwarz, Nathan Seiberg, Ashoke Sen, Steve Shenker, Eva Silverstein, Wei Song, Andy Strominger, Tadashi Takayanagi, Sandeep Trivedi, Cumrun Vafa, Pedro Vieira, Anastasia Volovich, Spenta Wadia, Edward Witten, Konstantin Zarembo, A convenient link with all talks at previous Strings meetings is hosted by Yuji Tachikawa at, https://member.ipmu.jp/yuji.tachikawa/stringsmirrors/, All sessions were recorded and are available at the Youtube daily links below or by clicking on the lecture in the, Strings 2021 will be held online during the two-week period. In the ending remark, Ooguri makes the observation that the percentage of speakers older than him is roughly a linear function (64-2x)% where x is the number of years after his PhD. As you probably guess from my former comments under the present pseudonym, Im one of those students whom, maybe for lacking courage or ,who knows? The spin-bundle required to defined fermion content from SUSY multiplet depends on the metric signature. In the end, we also consider a two-qubit system to demonstrate that a different entanglement spectrum does not provide the same constraint to $hat{H}$. Strings 2021 started today, program is available here. Cookies and PrivacyAboutEventsNews Divergence of perturbation theory in quantum electrodynamics. Abstract: The theory of Categorical Enumerative Invariants (CEIs) is a non-commutative generalization of the theory of Gromov-Witten invariants. Knots and Natural Language. The point though is that there are plenty of much simpler examples, which often can be understood purely in terms of representation theory. Reimundo Heluani Organizing Committee. There will also be a gong show session of 5-minute talks by PhD students and a poster session using Zoom breakout rooms. [Slides] [Video], Nikita Nekrasov (Simons Center for Geometry and Physics) Title: Heterotic little strings, T-duality and 2-group symmetries Penroses talk is interesting (https://www.youtube.com/watch?v=hk_6EtWUatM), as is the discussion between him and string folks afterwards. We construct a trace map on the elliptic chiral homology of the free beta gamma-bc system using the BV quantization framework. This talk is based on joint work with Si Li. Interestingly, most of the structures uncovered have a fractal boundary at infinity, which possesses a rich geometric structure. We are going to perform a construction of such quantum curves using the mathematical language of vertex operator algebras. Update: In the final discussion section, Witten emphasizes that What is string theory? still has no answer, that we have little idea what it really is. For a so called well defined mathematical theory, cannot be tweaked etc, the number of unsolved issues with it and the claim not understanding what string theory is is inconsistent. 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. 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. I am not a fan of string theory. 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. Abstract: Homological block, commonly denoted by , is a 3-manifold invariant whose existence was predicted by S. Gukov, D. Pei, P. Putrov, and C. Vafa in 2017 using 3d/3d correspondence. Thats interesting, can you give pointers? Finally, I will mention how some of these features are likely to persist in a proposal for the worldsheet dual of free N=4 Super Yang-Mills theory. Abstract: The sphere packing problem is a very natural geometric question and it has a long and exciting history. Abstract: It has been found, originally in the context of black hole thermodynamics, that the concept of entropy is better-defined in the presence of gravity than in ordinary quantum field theory without gravity. 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. Since its online only, talks are much more accessible than usual (and since its free, over 2000 people have registered to in principle participate via Zoom). The choice of flat connection at infinity for E8 or Spin(32)/Z2 respectively captures the feature of the 6D conformal matter theory built on F-theory geometry. Title: Holographic tensor networks from hyperbolic buildings 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. Abstract: Superconformal field theories with 8 supercharges in spacetime dimensions 3 to 6 have a large moduli space of vacua. He goes on to explain the landscape philosophy, which he sees string theorists (and himself) as now adopting. 1. Infinite Analysis 13 Autumn School on Quantum Dilogarithm, Modular Double, and Representation Theory. Rio de Janeiro, June 18th, 2021. If you are interested in what field theories Wittens probably interested in, then I certainly recommend you to follow the on going ICTSs Quantum Field Theory, Geometry and Representation Theory, with Wittens mini-course starting tomorrow: https://www.icts.res.in/program/qftgrt2021/talks, In order to get a feel what is at stake here, start with: Title: A Yang-Mills matrix theory 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: A holomorphic approach to fivebranes Add a comment | 21 . http://silentmatt.com/javascript-expression-evaluator/, http://www.codeproject.com/KB/scripting/jsexpressioneval.aspx, I spent a couple of hours to implement all the arithmetical rules without using eval() and finally I published a package on npm string-math. I watched the entire video on the Poincare group and, although the path was the same as Weinberg, there was a lot of new information I thought it was excellent. Abstract: Since 2017, knots and symmetric quivers are known to be intimately related via BPS spectra. Paul-Konstantin Oehlmann (Uppsala University) Title: Families of Modular Flux Vacua on Symmetric CY Threefolds Czy wyraasz na to zgod? Once again, this is just an opinion. The video is available here , and . 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. Strings 2021 is an annual conference that brings together the entire string theory community. 2. [Slides] [Video], Wei Li (Chinese Academy of Sciences) Quantum gravity: String theory is a theory of quantum gravity because it attempts to merge quantum physics with the theory of general relativity. Adrian, To address this issue, we use the fusion-matrix bootstrap, which is recently developed in the context of the light-cone bootstrap. This is exactly the place where you should be using eval(), or you will have to loop through the string and generate the numbers. 8. String theory calculations that can be done in unphysical situations (wrong dimension, lots of SUSY, extremal black holes) claim to reproduce the semiclassical limit. I will also discuss a second application, a new definition of FJRW invariants in the presence of an arbitrary symmetry group. Is there a way to calculate a formula stored in a string in JavaScript without using eval()? Abstract: Thepositive GrassmannianGrk,n0is the subset of the real Grassmannian where all Plcker coordinates are nonnegative. Abstract: We implement the unitary equivalence of modular Hamiltonian $hat{H}_{mathrm{mod}}$ and Hamiltonian $hat{H}$,$hat{H}simhat{U}^{dagger}hat{H}_{mathrm{mod}}hat{U}$, to realize the emergence of time from an unitary operator $hat{U}$. Title: The positive Grassmannian, amplituhedron, and cluster algebras [online talk] What is the point of Thrower's Bandolier? This provides an enumerative interpretation of the A-model topological string partition function on non-commutative resolutions of the singular Calabi-Yaus. How do I make the first letter of a string uppercase in JavaScript? Title: The Penrose Inequality as Swampland Condition? I will then explain how to describe their representations using subcrystals and how they can be translated into the framings of the quivers. Just like in the smooth case, one can ask about the multiplicities of BPS states that now carry an additional discrete charge. This talk is based on joint work with Xenia de la Ossa, arXiv:2111.13221. (videos of the talks at the bottom). Fall 2021. We introduce a. new idea, boundary averaging, to address the question: Does averaging also work well in AdS/BCFT? The series of String-Math conferences has developed into a central event on the interface between mathematics and physics related to string theory, quantum field theory and neighboring subjects. Unfortunately, finding explicit solutions to the system is a challenging problem due to the existence of an anomaly cancellation condition for the gauge fields. We propose that the matching of 5d coulomb branches plus the 2-group structure constants determined by the higher form symmetry of LSTs as criteria to predict heterotic T-dual candidates.The exploitation are generalized by picking non-trivial flat connections at the infinity to break E8 and Spin(32)/Z2 into their subgroups and confirm these T-dualities by the matching of criteria aforementioned. At the time I drop those lines, more than 50 years from dual resonance models?, I havent found any convincingly argument. There are other views, it is a matter of taste. Considering two heterotic E8 E8 and Spin(32)/Z2 string theory placed on various background singularities, we expect the heterotic NS5 instantons to fraction. The resulting quivers highlight fractionalization of those branes, that we determine for single and multiple brane stacks. Hirosi Ooguri (Caltech & IPMU) This jargon sounds a bit confusing. The linking numbers of plumbing graphs are interpreted as the effective mixed Chern-Simons levels of 3d N=2 theories with chiral multiplets. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. I saw the discussions you refer to. Abstract: I will explain how to explicitly calculate knot homology using the Fukaya category associated to a 2d Landau-Ginsburg theory, which is the equivariant mirror of the Coulomb branch of a 3d $mathcal{N}=4$ theory. [Slides] [Video], Yaping Yang (University of Melbourne) Chen-Te Ma (Asia Pacific Center for Theoretical Physics)
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