Abstract
The work derives a Page curve in a time-dependent AdS3/BCFT2 setup and compares defect extremal surface and island prescriptions. It then extends the comparison to higher dimensions, where the bulk defect-extremal-surface entropy is generally smaller than the low-energy island result.
Context
Page curve 检验熵处方能否描述蒸发中的信息回收。缺陷构造允许直接比较体理论与低维描述。
主要结果
两种处方在时间依赖的 AdS₃/BCFT₂ 构造中一致；在更高维，体缺陷极值面的结果通常低于边界低能有效理论中的 island 结果。
为何重要
该比较区分了低维精确匹配与高维 UV 敏感差异，避免把二者预设为普遍等价。
引用 / BibTeX
@article{Chu:2021PageCurveDES,
author = {Chu, Jinwei and Deng, Feiyu and Zhou, Yang},
title = {Page curve from defect extremal surface and island in higher dimensions},
journal = {JHEP},
volume = {10},
pages = {149},
year = {2021},
doi = {10.1007/JHEP10(2021)149},
eprint = {2105.09106},
archivePrefix = {arXiv}
}