时间：2025年11月4日（星期二）下午14:00-15:30
地点：西湖大学云谷校区E4-233
主持人：理论科学研究院 刘洪光
主讲人：Fei Huang, Weizmann Institute of Science
主讲人简介：Dr. Fei Huang is a postdoc from the Weizmann Institute of Science in Israel. He earned his PhD from the University of Arizona, and then worked as a joint postdoc at the University of California, Irvine, and the Institute of Theoretical Physics, Chinese Academy of Sciences. His research interests lie at the interface between high energy physics and cosmology. His recent work focuses on dark matter theories and the expansion histories of the universe.
报告题目：Cosmological Stasis and Its Observational Signatures
报告摘要：Cosmological stasis is a phenomenon in which multiple energy components with different equation-of-state parameters maintain constant abundances for an extended period despite the expansion of the universe. In this talk, I review the how stasis arises and discuss the possible implications of this phenomenon in observations. These include characteristic imprints in the stochastic gravitational-wave background and the enhancement in the growth of matter density perturbations on small scales.
