Partial reduction and cosmology at defect brane
Partial reduction and cosmology at defect brane
复制标题
缺陷膜的部分还原和宇宙学
DOI:
10.1007/jhep05(2022)049
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发表时间:
2021-12
影响因子:
5.4
通讯作者:
Yang Zhou
中科院分区:
文献类型:
--
作者:
Zhi Wang;Zekun Xu;Shuyan Zhou;Yang Zhou
Partial reduction is a Karch-Randall reduction for only part of the AdS region between finite tension brane and zero tension brane. This is interesting in AdS/BCFT where the AdS bulk contains a defect brane. We employ partial reduction for a AdS bulk with a brane evolving as a 2d Friedmann-Robertson-Walker (FRW) cosmology and demonstrate the equivalence between defect extremal surface and island formula for a large subregion fine grained entropy in boundary CFT. We then move to higher dimensions and demonstrate the existence of 4d massless graviton on AdS4 brane in partial reduction. We also propose a partial reduction for a 4d FRW cosmology at defect brane and obtain the Newton constant by computing boundary entropy.
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DOI:
10.1016/0550-3213(95)00476-9
发表时间:
1995-05
期刊:
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影响因子:
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通讯作者:
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影响因子:
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影响因子:
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