论文编号:
第一作者所在部门:
论文题目:	Complexity-action of subregions with corners
论文题目英文:
作者:	Caceres, Elena; Xiao, Ming-Lei
论文出处:
刊物名称:	JOURNAL OF HIGH ENERGY PHYSICS
年:	2019
卷:
期:	3
页:	62
联系作者:
收录类别:
影响因子:
摘要:	In the past, the study of the divergence structure of the holographic entanglement entropy on singular boundary regions uncovered cut-off independent coefficients. These coefficients were shown to be universal and to encode important field theory data. Inspired by these lessons we study the UV divergences of subregion complexity-action (CA) in a region with corner (kink). We develop a systematic approach to study all the divergence structures, and we emphasize that the counter term that restores reparameterization invariance on the null boundaries plays a crucial role in simplifying the results and rendering them more transparent. We find that a general form of subregion CA contains a part dependent on the null generator normalizations and a part that is independent of them. The former includes a volume contribution as well as an area contribution. We comment on the origin of the area term as entanglement entropy, and point out that its presence constitutes a robust difference between the two prescriptions to calculate subregion complexity (-action vs. -volume). We also find universal log divergence associated with the kink feature of the subregion. Similar flat angle limit as the subregion-CV result is obtained.
英文摘要:
外单位作者单位:
备注: