题目：JT gravity from partial reduction and defect extremal surface

报告人：安宇森博士,复旦大学

时间：2022年12月14号（周三）早上10:00

腾讯ID：288 586 964

邀请人：魏少文

报告摘要：

In this talk I will first briefly introduce some basic background about AdS/BCFT correspondence , 2d JT gravity and entanglement island formula. After that, I will show how to obtain JT gravity on the fluctuating brane by directly doing partial dimension reduction of the 3d bulk AdS spacetime. I will show that the brane fluctuation is identified as the dilaton field in JT gravity. After getting JT action and boundary Schwarzian dynamics, I will give further support of our partial dimension reduction proposal by calculating entanglement entropy. I will describe the defect extremal surface formula, which is a simple generalization of RT formula, and show that 3d defect extremal surface formula is the holographic counterpart of the 2d entanglement island formula.

报告人简介：

安宇森，2016年本科毕业于北京师范大学物理系，2021年在中国科学院理论物理研究所获得博士学位，目前在复旦大学物理系从事博士后研究工作，研究方向为引力理论，黑洞物理和规范引力对偶，发表学术论文9篇，被引300余次。