论文标题
封闭和开放宇宙中的岛屿
Islands in Closed and Open Universes
论文作者
论文摘要
我们表明，空间曲率对宇宙学中纠缠岛的存在有重大影响。我们考虑一个同质的各向同性宇宙，其热辐射由参考时空纯化。任意小的积极曲率保证了整个宇宙是一个岛屿。封闭或开放式宇宙的时间对称切片的适当子集可以是岛屿，但前提是宇宙常数为负且大小足够大。
We show that spatial curvature has a significant effect on the existence of entanglement islands in cosmology. We consider a homogeneous, isotropic universe with thermal radiation purified by a reference spacetime. Arbitrarily small positive curvature guarantees that the entire universe is an island. Proper subsets of the time-symmetric slice of a closed or open universe can be islands, but only if the cosmological constant is negative and sufficiently large in magnitude.
