Date: November 5 (Tue), 9:00(JST)
Speaker: Yoshinori Matsuo (Kindai Univerisity)
Title: Islands in black hole spacetimes
Abstract: Recently, it was proposed that the Page curve is reproduced by using the prescription of islands. The island prescription is first proposed in the framework of holography. By using the formula of the quantum extremal surface, it turns out that there is a region which is not covered by the entanglement wedge of the CFT after a sufficient amount of Hawking radiation has got outside of the AdS spacetime. This region, which is called the island, is interpreted as a part of the entanglement wedge of (a dual of) the Hawking radiation. The same formula can be obtained by using the replica trick for theories with gravity, and hence, can be applied for any black holes without relying on holography. In this talk, we discuss islands in general black holes with non-degenerate horizons.