【5.12; Seminar】2026年粒子天体物理全国重点实验室系列学术报告 #15：Cosmology with Fuzzy Dark Matter Model

时间/Time: 2026年5月12日周二上午10:00 / Tuesday, May 12, 2026, 10:00 a.m.

地点/Location: 多学科楼229会议室 / Meeting Room 229, Multidisciplinary Building

报告人/Speaker: 李昕宇博士（清华大学天文系）/ Dr. Xinyu Li (Department of Astronomy, Tsinghua University)

题目/Title: Cosmology with Fuzzy Dark Matter Model

主持人/Host: 毕效军 研究员/ Prof. Xiaojun BI

摘要/Abstract:

Fuzzy Dark Matter (FDM) is made up of ultralight bosons with mass around ~1e-22 eV. It is proposed to solve the small scale problems of the cold dark matter while mimicking the CDM on the large scale. The dynamics of FDM is governed by the Schrödinger-Poisson equation. The wave nature of FDM exhibits novel phenomena including density fluctuations, formation of vortices and filaments, and oscillation of the soliton core at the halo centre. They can be used to observationally probe and constrain the FDM model through gravitational lensing and stellar dynamics.

个人简介/Biography:

李昕宇，清华大学天文系助理教授，2019年博士毕业于哥伦比亚大学。加入清华之前他在加拿大理论天体物理研究所进行博士后研究。他的研究兴趣在于通过不同的天体现象的理论研究发现基础物理原理。他的研究课题横跨各种天体物理尺度，从基本粒子如电子和轴子，到中子星、黑洞、星系，直至整个宇宙的大尺度结构。