The idea of holography in string theory provides a simple geometric computation of entanglement entropy. This generalizes the well-known Bekenstein-Hawking formula of black hole entropy and strongly suggests that a gravitational spacetime consists of many bits of quantum entanglement. After we give a brief review of this field, I will explain progresses on a recently introduced quantity called pseudo entropy, which generalizes the entanglement entropy and has a manifest gravity dual.
Zoom link: https://us06web.zoom.us/j/88908924452?pwd=dXlpVmNSZjBVMVNRY3A3UUZHdHRadz09
Meeting ID: 889 0892 4452