Title：First principle approach toward the information loss paradox
Time：2021/12/13 (Mon.) 12:30
Place：R517, New Physics Building, NTU

Abstract:
As a crowning achievement of the semi-classical analysis of black hole, the information loss paradox is often considered a gateway toward quantum gravity. We will discuss how we translate the logical deduction of the paradox into an effective model, and how, despite the expressive power of the model, we arrive at several qualitative statements which are identified as features inside the black hole microscopic density of states. In particular there exists a zero-frequency-pole-like structure, which we relates to the soft hair, a IR structure native to the general relativity. From the connection we argue that one should consider deviating away from the zero frequency limit for soft hairs to participate in the black hole evaporation, which we coined microsoft hair. The nonperturbative analysis of the microsoft hair reveals a nontrivial deformation to the horizon shape and the associated surface gravity, i.e. the Hawking temperature, and the existence of ergosphere allowing energy extraction via Blandford-Znajek process, suggesting the emergence of a new 2-D degree of freedom, thus partially fulfilling our original claim that microsoft hairs is potentially a way out of the inforamtion loss paradox.