报告人：Ali Mollabashi博士后（日本京都大学）

题 目：Time Scaling of Entanglement Entropy in Scale-invariant QFTs

时 间：2023年6月16日（周五）16:00

地 点：理工楼1226

邀请人：王科

报告摘要：

In two dimensional isotropic scale-invariant theories, the time scaling of the entanglement entropy of a segment is fixed via the conformal symmetry. After reviewing the basics of this theoretical prediction in conformal field theories (CFTs), which is supported by various experimental results, I will consider scale-invariance in a more general sense which includes Lifshitz invariant theories. I show that in Lifshitz invariant integrable theories, in contrast with CFT, most of the entanglement is carried by the slow modes. At quite early times entanglement grows linearly due to the contribution of the fast modes, before smoothly entering a slow mode regime where it grows forever. This analytical prediction agrees with numerical simulations in corresponding fermionic and bosonic lattice models. I will also show that in these non-relativistic theories that the slow modes are dominant, local quantum information is universally scrambled in a stronger way compared to their relativistic counterparts.

报告人简介：

I finished my graduate studies at Sharif University and IPM in Tehran in 2015. I held a postdoctoral associate position at IPM from 2015-2018. Afterward, I moved to Max-Planck Institute for Physics as an Alexander Humboldt fellow until late 2020. As my third postdoc, I moved to Yukawa Institute for Theoretical Physics at Kyoto University. I will join the School of Physics of IPM as a junior faculty from Sep. 2023. I am mainly interested in the interface between quantum field theory, quantum gravity, and quantum information theory.