Physics

Abstract: The Gaiotto-Moore-Witten "Algebra of the Infrared" allows one to construct the category of supersymmetric boundary conditions for a wide class of massive N=(2,2) QFTs in two dimensions. In particular, it applies to N=(2,2) QFTs defined by...

Abstract: I will discuss consequences of the loss of the “additivity” property of QFT in the large N limit of Holographic CFTs. I will demonstrate how the additivity anomaly underlies the success of quantum error correcting code models of holography...

Abstract: Tidal deformabilities serve as an effective tool to study the structures of compact objects. In the first part of the talk, I will present how the worldline effective field theory (EFT) can be applied to examine the tidal responses of...

Abstract: Higgs branches in theories with 8 supercharges change as one tunes the gauge coupling to critical values.

This talk will focus on six dimensional (0,1) supersymmetric theories in studying the different phenomena associated with such a...

Abstract: Discussion of recent work on topological order in mixed-states, based on https://arxiv.org/abs/2403.13879

Abstract: In this talk I will discuss holographic duals of topological operators.  At low energy sugra, they can be realized by Page charge associated to Gauss law constraints. In the UV string theory, topological operators can be characterized by...

Abstract: I will compare the gravitational sectors of two 10d heterotic string theories, with E8 x E8 and Spin(32)/$Z_2$ gauge groups, and show that they differ by a subtle $Z_3$-valued topological term. I also discuss its relation to the...

Abstract: Quantum critical points usually separate two distinct phases of matter. Here I will discuss a class of "unnecessary" quantum critical points that lie within a single phase of matter (much like the liquid-gas transition, except that they...

Abstract: Topological defect lines in 2D CFTs have found resurgence in the context of categorical symmetries. In this talk, I will present the lattice realization of these for unitary Minimal Models. I will use Spin chains, such as Transverse Field...