[Hybrid RBRC seminar] Entropy-Area Law from Interior Semi-classical Degrees of Freedom

by Dr Yuki Yokokura (RIKEN)

Thursday Sep 1, 2022, 9:30 AM → 10:30 AM US/Eastern

2-160 (https://bnl.zoomgov.com/j/1606067399?pwd=am02b0xIUXZ6TDR3d1dWL05TTDdaUT09)

A black hole is considered as a bound state consisting of many semi-classical degrees of freedom responsible for the entropy which exist uniformly inside and have maximum gravity. The distribution of their information determines the interior metric through the semi-classical Einstein equation. Then, the interior is a continuous stacking of $AdS_2\times S^2$ without horizon or singularity and behaves like a local thermal state at a near-Plankian local temperature. Evaluating the entropy density from thermodynamic relations and integrating it over the interior volume, the area law is obtained with the factor 1/4 for any interior degrees of freedom, where the dynamics of gravity plays an essential role in changing the entropy from the volume law to the area law. [arXiv: 2207.14274]