报告题目：Exact solutions in higher-derivative gravities

报告人：Breno Loureiro Giacchini, 博士后 (Charles University, Czech Republic)

报告时间：2026 年 10 月 22 日（周四）15 : 30-16 : 30

报告地点：北洋园校区 49 教 410 室

报告摘要：

Higher-derivative gravity models play an important role in various approaches to quantum gravity, serving both as potential foundations for renormalizable theories and as effective descriptions of gravitational interactions at low energies. In this talk, we will present several recent results on exact classical solutions in higher-derivative gravity. Focusing first on quadratic gravity, we will discuss novel classes of static, spherically symmetric solutions characterized by generalized power-series expansions with coupling-dependent exponents. Going beyond static and spherically symmetric geometries, we will then discuss rotating near-horizon extreme geometries in quadratic gravity, which may provide valuable insights into the structure of non-Kerr rotating black-hole solutions (yet to be discovered). Finally, we will present the first local classification of solutions in a generic six-derivative gravity theory and discuss the possibility of resolving black hole singularities within this framework.

报告人简介：

Breno L. Giacchini received his Ph.D. from the Brazilian Center for Research in Physics (CBPF) in Rio de Janeiro. In 2019 he joined Southern University of Science and Technology in Shenzhen, where he worked as research assistant professor. Since 2023 he has been a postdoctoral researcher at Charles University in Prague, Czech Republic. His research focuses primarily on higher-derivative gravity theories, perturbative quantum gravity, and gauge theories.