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On holographic defect entropy
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DOI：10.1007/JHEP05(2014)084.png)
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摘要
En 中文
We study a number of (3 + 1)- and (2 + 1)-dimensional defect and boundary conformal field theories holographically dual to supergravity theories. In all cases the defects or boundaries are planar, and the defects are codimension-one. Using holography, we compute the entanglement entropy of a (hemi-)spherical region centered on the defect (boundary). We define defect and boundary entropies from the entanglement entropy by an appropriate background subtraction. For some (3 + 1)-dimensional theories we find evidence that the defect/boundary entropy changes monotonically under certain renormalization group flows triggered by operators localized at the defect or boundary. This provides evidence that the g-theorem of (1 + 1)-dimensional field theories generalizes to higher dimensions.
Keyword:
Gauge-gravity correspondence
AdS-CFT Correspondence
Holography and condensed matter physics (AdS/CMT)
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期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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