【09.12】Seminar：Black Holes and Covariance in Effective Quantum Gravity
Seminar
報(bào)告題目：Black Holes and Covariance in Effective Quantum Gravity
報(bào)告人：張聰，博士，德國(guó)埃爾朗根--紐倫堡大學(xué)
主持人：凌意，研究員，中國(guó)科學(xué)院高能物理研究所
報(bào)告時(shí)間：2024年9月12日（周四），上午10點(diǎn)
報(bào)告地點(diǎn)：圖書館樓319會(huì)議室
報(bào)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.
個(gè)人簡(jiǎn)介：
張聰，現(xiàn)為德國(guó)埃爾朗根--紐倫堡大學(xué)博士后。本科畢業(yè)于北師大天文系，博士畢業(yè)于北師大物理系。曾在波蘭華沙大學(xué)從事博士后研究工作。目前主要研究興趣集中于圈量子引力和圈量子黑洞，在PRL，PRD，CQG和RAA等刊物發(fā)表文章20余篇，包括一篇600+高被引文章。
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