【09.12】Seminar：Black Holes and Covariance in Effective Quantum Gravity
Seminar
报告题目：Black Holes and Covariance in Effective Quantum Gravity
报告人：张聪，博士，德国埃尔朗根--纽伦堡大学
主持人：凌意，研究员，中国科学院高能物理研究所
报告时间：2024年9月12日（周四），上午10点
报告地点：图书馆楼319会议室
报告摘要：
This work addresses the longstanding issue of general covariance in spherically symmetric gravity, which arises when canonical quantum gravity leads to a semiclassical model described by an effective Hamiltonian constraint. Applying the minimal requirements proposed to ensure general covariance, we derive the equations for the effective Hamiltonian constraint with the aid of imposing demands on Dirac observables. The equations yield two candidates for effective Hamiltonian constraints dependent on a quantum parameter. The resulting quantum modified black hole spacetimes are analyzed. Particularly, our models show improvement by casting off the known limitations of previous works with similar results.
个人简介：
张聪，现为德国埃尔朗根--纽伦堡大学博士后。本科毕业于北师大天文系，博士毕业于北师大物理系。曾在波兰华沙大学从事博士后研究工作。目前主要研究兴趣集中于圈量子引力和圈量子黑洞，在PRL，PRD，CQG和RAA等刊物发表文章20余篇，包括一篇600+高被引文章。
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