Islands and stretched horizon

A bstract Recently it was proposed that the entanglement entropy of Hawking radiation contains information a region including interior event horizon, which is called “island.” In studies radiation, total system in black hole geometry separated into and hole. this paper, we study asymptotically flat Schwarzschild spacetime. Consistency with island rule for implies located different than island. We found an instability calculation outside surface near horizon. This all localized on surface. Thus would be interpreted as stretched structure also resembles holes AdS spacetime auxiliary spacetime, where at interface between