我在北京师范大学博士后期间的研究兴趣主要集中在超越广义相对论的引力理论，包括量子引力（UV）和经典修正引力理论（IR）。我在量子引力方面的研究集中在非微扰量子化方法上，其中包括圈量子引力、Polymer量子化和共形量子场论。我这一部分的研究主要是将这些强大的理论方法应用到对称约化系统（量子宇宙和量子黑洞）中。我在博士后期间为量子引力基本问题和这些量子化的引力系统现象学观测预言之间搭建了桥梁。我在修正引力理论和暗能量候选理论方面也发展了补充性的知识，重点是它们对黑洞解的修正，使我能够为多个研究领域建立联系，开展跨学科的长期研究项目。正文中将量子引力研究、不同的强大理论工具和修正引力理论研究结合起来，旨在开拓新的超越广义相对论的极早期宇宙学和黑洞物理未来十年的研究方向。我在正文中对我在北京师范大学博士后期间获得的成果作了详细介绍。

My research interest during my postdoc in BNU has focused primarily on gravitational physics beyond General Relativity, both from quantum gravity considerations (UV) or classical modified gravity theories (IR). My research activities in quantum gravity focus on nonperturbative quantization technics, among which Loop Quantum Gravity, Polymer Quantization and Conformal Quantum Field Theory. This part of my research program focuses on the applications of these powerful technics to symmetry reduced systems (quantum cosmology and quantum black holes). I have develop during my postdoctoral positions a strong expertise bridging between foundational issues in quantum gravity and the phenomenology of these quantized gravitational systems in view of extracting observational predictions. I have also developed a complementary expertise in modified gravity theories and Dark Energy candidates, with a focus on their modified black hole solutions, allowing me to be at the interface of several communities and develop interdisciplinary long term research projects. The research program presented below mixes investigations in quantum gravity, using different powerful technics, and investigations in modified gravity with the aim to develop new promising directions of research for the future decade in early cosmology and black hole physics beyond General Relativity. Below, I give a detailed account on the result I obtained during my postdoc in BNU.