报告题目：Index saddle for supersymmetric F1-P black ring

报告人：Gurmeet 博士（ICTS/PCFT，中国科学技术大学）

报告时间：2026 年 9 月 24 日（周四）15 : 30-16 : 30

报告地点：北洋园校区 49 教 410 室

报告摘要：

We construct singly and doubly spinning non-supersymmetric F1–P black rings in five-dimensional supergravity, analyzing their regular horizons, thermodynamics, physical properties, and limiting geometries. The doubly spinning solution is a charged extension of the Chen–Hong–Teo black ring. We further construct the supersymmetric F1–P black-ring index saddle as a three-center Bena–Warner solution. Although its two-derivative index vanishes due to horizon singularities, higher-derivative corrections are expected to yield a finite result. Scaling arguments reproduce the microscopic index up to an undetermined numerical constant within a restricted parameter regime.

报告人简介：

       Gurmeet is a postdoctoral fellow at ICTS/PCFT @ USTC. He completed his PhD at IISER Bhopal under the supervision of Prof. Suvankar Dutta. His research focuses on black holes in string theory, supergravity, quantum corrections, and higher-derivative theories. His iNSPIRE-HEP profile: https://inspirehep.net/authors/1987432