Island and Page curve for one-sided asymptotically flat black hole

• DOI: 10.1007/jhep07(2022)020
• Publication Date: 2022-07-05T05:02:33Z
• Authors: Wen-Cong Gan; Dong-Hui Du; Fu-Wen Shu
• Keywords: Black hole (networking); Cut-off

Great breakthrough in solving black hole information paradox took place when semiclassical island rule for entanglement entropy of Hawking radiation was proposed recent years. Up to now, most papers which discussed asymptotic flat with $D \ge 4$ focus on eternal hole. In this paper, we take one more step further by discussing "in" vacuum state describes one-sided asymptotically formed gravitational collapse 4$. We find that $I$ emerges at late time and saves bound. And boundary $\partial I$ depends the position cutoff surface. When surface is far from horizon, inside near horizon. set be outside This different case always horizon no matter or will see states manifestly affect $S_{\text{ent}}$ formula thus have result Page time.