Archive of IAS Physics Group Meetings

Abstract: Tensor network states are new kinds of variational wavefunctions that help us to understand quantum phases and phase transitions beyond Landau paradigm. In this talk, I will first review the major development of tensor network simulation...

In this first group meeting of the academic year, we will all introduce ourselves and give a short description of our current research.

The plan for future group meetings is for members, visitors and faculty to give a pedagogical introductory talk on...

Abstract: In this talk, we'll review the bootstrap method that uses unitarity and causality (analyticity + crossing) to constrain low-energy effective field theories (EFTs), especially those including gravitational couplings. This method allows us...

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: 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: Pulsar timing arrays (PTAs) consist of a set of regularly monitored millisecond pulsars with extremely stable rotational periods. The arrival time of pulses can be altered by the passage of gravitational waves (GWs) between them and the...

Abstract: In spite of tremendous progress in mean-field spin glass theory over the last forty years, “realistic” spin glass models with short-range interactions remain shrouded in mystery. I will talk about recent progress on this topic, proving a...

Abstract: We study the partition function of 3D de Sitter gravity defined as the trace over the Hilbert space obtained by quantizing Schwarzschild-de Sitter spacetime. Motivated by the correspondence with double scaled SYK, we identify the...