Events Archive

High Energy Theory Seminar

IAS HET Seminar | Nafiz Ishtiaque, Member, School of Natural Sciences, IAS| "Relating Integrable Spin Chains to Gauge Theories via String Theory" | Wolfensohn Hall & Zoom

Fri, May 20, 2022, 1:45 pm

I will discuss some applications of brane constructions of rational integrable spin chains with Verma modules. These spin chains appear in various gauge theories.


HET Seminar | Lorenzo di Pietro, Sissa, International School for Advanced Studies| “Factorization and Global symmetry in holography” | Via Zoom

Fri, May 6, 2022, 1:45 pm

Based on 2203.09537. In the context of toy models of holography arising from 3d Chern-Simons theory, I will describe an approach in which, rather than summing over bulk geometries, one gauges a one-form global symmetry of the bulk theory.


IAS HET Seminar | Lance Dixon, Stanford University| "Scattering Amplitudes in Maximally Supersymmetric Gauge Theory and a New Duality" | Wolfensohn Hall & Zoom

Mon, May 2, 2022, 2:30 pm

Scattering amplitudes are the arena where quantum field theory directly meets collider experiments.  An excellent model for scattering in QCD is provided by N=4 super-Yang-Mills theory, particularly in the planar limit of a large number of colors, where the theory becomes integrable, and amplitudes become dual to light-like polygonal Wilson-...


POSTPONED!! IAS HET Seminar - Friday, April 22 - 1:45 PM - Wolfensohn Hall & Zoom - "Quantum Error Correction in SYK and Bulk Emergence" - Adam Levine, Member, School of Natural Sciences, IAS

Fri, Apr 29, 2022, 1:45 pm




IAS HET Seminar - Friday, April 22 - 1:45 PM - Wolfensohn Hall & Zoom - "Localized Collisions and the Black Hole Interior" - Felix Haehl, IAS

Fri, Apr 22, 2022, 1:45 pm

We study collisions of localized shockwaves behind the horizon of the eternal AdS black hole. We give a holographic boundary description in terms of the overlap of two growing perturbations in a shared quantum circuit.


IAS HET Seminar | Amit Sever, Tel-Aviv University| “"Line Operators in Chern-Simons-Matter Theories and Bosonization in Three Dimensions” | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom

Mon, Apr 18, 2022, 2:30 pm

We study Chern-Simons theories at large N with either bosonic or fermionic matter in the fundamental representation. The most fundamental operators in these theories are mesonic line operators, the simplest example being Wilson lines ending on fundamentals.


HET Seminar | John Cardy, University of California, Berkeley | “TTbar-deformed modula” | Via Zoom

Mon, Apr 11, 2022, 2:30 pm

Certain objects of conformal field theory, for example partition functions on the rectangle and the torus, and one-point functions on the torus, are either invariant or transform simply under the modular group, properties which should be preserved under the TTbar deformation.


IAS HET Seminar | Hong Liu, Massachusetts Institute of Technology| “"Emergent Times in Holography” | Via Zoom

Mon, Apr 4, 2022, 2:30 pm

We discuss emergent type III1 von Neumann algebraic structures in the large N limit of certain class of quantum field theories.


IAS HET Seminar | Javier Fuentes, University of Granada| “Following the Footprints of the B-physics Anomalies” | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom

Mon, Mar 28, 2022, 2:30 pm

Recent B-meson data show a reinforced set of deviations from the Standard Model predictions, pointing to violations of lepton flavor universality. I will critically review these data and discuss their theoretical interpretation, including their possible connection to the hierarchical pattern of fermions masses and mixing angles.


IAS HET Seminar | Matthew Heydeman, Member, School of Natural Sciences, IAS| “Nearly BPS Black Holes in AdS5 and their Spectrum in N=4 SYM” | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom

Fri, Mar 25, 2022, 1:45 pm

In this talk, we will discuss quantum corrections in the gravitational path integral around nearly 1/16-BPS black holes in asymptotically AdS5 x S5 space, dual to heavy operators in N=4 SYM.


HET Seminar | Julio Parra-Martinez , Caltech | “Causality constraints on corrections to Einstein gravity” | PCTS Room 407

Mon, Mar 21, 2022, 2:30 pm

We study constraints from causality and unitarity on 2→2 graviton scattering in four-dimensional weakly-coupled effective field theories. Together, causality and unitarity imply dispersion relations that connect low-energy observables to high-energy data.


IAS HET Seminar | Anatoly Dymarsky, University of Kentucky & Skoltech | "Codes and Conformal Field Theories" | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom

Mon, Mar 14, 2022, 2:30 pm

I will review recent progress connecting (quantum) codes with two-dimensional conformal field theories of the Narain type. In the first part of the talk I will show how codes can be used to construct CFTs with large spectral gap. In the second part I will construct a map from a large class of rational Narain CFTs to quantum stabilizer codes....


IAS HET Seminar | Giulio Salvatori, Member, School of Natural Sciences, IAS| “Scattering Amplitudes, Positive Geometries and Surfaces” | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom

Fri, Mar 11, 2022, 1:45 pm

In recent years we have witnessed the emergence of a novel description for the physics of scattering amplitudes at the heart of which are mathematical structures called Positive Geometries, which loosely speaking are generalizations of polytopes having the crucial feature of encoding in their boundaries the singularity structure of...


HET Seminar | Beatrix Muhlmann, McGill University | “The semiclassical gravitational path integral and random matrices” | Via Zoom

Mon, Feb 21, 2022, 2:30 pm

According to Gibbons and Hawking the entropy of a dS universe is encoded in the Euclidean gravitational path integral over compact manifolds with dominant sphere saddle. In this talk I will report on recent work in which we explicitly calculate this gravitational path integral in two spacetime dimensions.


HET Seminar |Justin Kaidi , Stony Brook University | “Kramers-Wannier-like duality defects in (3+1)d gauge theories” | Via Zoom

Fri, Feb 18, 2022, 1:45 pm

I will introduce a class of non-invertible topological defects in (3+1)d gauge theories whose fusion rules are the higher-dimensional analogs of those of the Kramers-Wannier defect in the (1+1)d critical Ising model.


HET Seminar | Sabrina Gonzalez Pasterski, Princeton University | “The Celestial Almanac” | PCTS (Room 407) & Zoom

Mon, Feb 14, 2022, 2:30 pm

We start by revisiting the task of constructing a holographic dual to quantum gravity in asymptotically flat spacetimes. Upon recasting the S-matrix in terms of data at the conformal boundary, we see that the two standard approaches amount to slicing up the bulk and boundary in different ways.


IAS HET Seminar | Igor Klebanov, Princeton University; Distinguished Visiting Professor, School of Natural Sciences, IAS | "O(N), Sp(2M), and OSp(1|2M) Models" | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom

Fri, Feb 11, 2022, 1:45 pm



IAS HET Seminar | Kevin Costello, Perimeter Institute | “Scattering Amplitudes in Gauge Theory as Chiral Algebra Correlators” | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom

Mon, Feb 7, 2022, 2:30 pm

IAS HET Seminar | Shai Chester, Weizmann Institute of Science | "Bootstrapping N = 4 super-Yang-Mills on the conformal manifold" | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom

Mon, Nov 15, 2021, 2:30 pm

Abstract:  We study the = 4 SYM stress tensor multiplet 4-point function for any value of the complexified coupling tau, and in principle any gauge group (we focus on SU(2) and SU(3) for simplicity).


IAS HET Seminar | Ahsan Z Khan, Member, School of Natural Sciences, IAS | "TBA" | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom