报告题目：Emergent Gravity from Stress Tensor Deformation

报告人：何松 教授（宁波大学）

报告时间：2026 年 3 月 19 日（周四）10 : 00-11 : 30

报告地点：北洋园校区 49 教 410 室

报告摘要：

We present a semiclassical framework in which stress-tensor deformations of a quantum field theory (QFT) reorganize into a gravitational action evaluated at a metric saddle. The deformed partition function can be written as a gravitational path integral evaluated at the saddle, establishing a direct link between stress-tensor flows and gravitational dynamics. Two complementary routes arise: (i) from gravitational actions such as Einstein and Palatini, which map to stress-tensor deformations of a seed QFT; and (ii) from deformed QFTs such as generalized Nambu-Goto and TTbar -like deformed models, which reconstruct the corresponding gravitational actions. Finally, in a free, massive scalar theory, we show that the one-loop effective action of the nonlocal deformation contains a local curvature term; its coefficient defines an induced Newton constant at a chosen renormalization scale, thereby demonstrating a bidirectional link between stress-tensor flows and classical gravity.

报告人简介：

       何松，宁波大学基础物理与量子科技研究院教授，主要从事引力理论、量子场论，弦理论及其数学物理相关问题的研究。目前的研究兴趣主要是利用弦论和场论中的对偶关系，理解引力的本质以及利用规范引力对偶方法，研究量子场论中的非微扰问题。