报告题目：Island on codim-2 brane in AdS/dCFT

报告人：苗荣欣 副教授（中山大学）

报告时间：2022年11月03日（周四）下午15:00-16:00

报告地点：在线报告（腾讯会议ID：442 4477 5872）

报告摘要：

The previous studies of the island and double holography mainly focus on codim-1 branes. In this talk, we discuss the island on codim-2 brane in AdS/dCFT.  We find the mass spectrum of gravitons is positive and gravity can be located on the codim-2 brane. The larger the brane tension, the smaller the gravitational mass, and better the localization.  It is similar to the case of codim-1 brane and builds an excellent physical foundation for the study of black hole information problem on codim-2 branes. We find that the Page curve of eternal black holes can be recovered due to the island ending on the codim-2 brane. The new feature is that the extremal surface passing the horizon cannot be defined after some finite time in the no-island phase. Fortunately, this unusual situation does not affect the Page curve since it happens after Page time.

参考文献：

[1] Peng-Ju Hu, Dongqi Li, Rong-Xin Miao, Island on codimension-two branes in AdS/dCFT, to appear in JHEP, [arXiv: 2208.11982 [hep-th]]

[2] Qi-Lin Hu, Dongqi Li, Rong-Xin Miao, Yu-Qian Zeng, AdS/BCFT and Island for curvature-squared gravity, JHEP 09 (2022) 037, [arXiv: 2202.03304 [hep-th]]

[3] Rong-Xin Miao, Codimension-n holography for cones, Phys.Rev.D 104 (2021) 8, 8 [arXiv: 2101.10031 [hep-th]]

报告人简介：

苗荣欣，中山大学物理与天文学院副教授。南开大学本科，2014年于中国科学技术大学获得博士学位，随后在德国马普引力所和中国台湾清华大学做博士后，2018年加入中山大学。近年来研究兴趣集中在反常电流、带边界场论的引力对偶（AdS/BCFT）、全息的量子纠缠等。2018年与合作者发现一种新的边界反常输运现象，近年来构造了一系列双全息模型。目前在PRL，JHEP，PRD，PLB等杂志发表论文40篇，inspire 引用一千余次。

报告链接：

Island on codim-2 brane in AdS/dCFT_哔哩哔哩_bilibili