学术活动

Self-interacting Dark Matter and Axion-like Dark Matter

作者:点击次数:更新时间:2018年05月28日

报 告 人:张宏 博士

  间:2018528日(星期一 下午14:30-15:30

  点:物理学院 LE423

邀 请 人:吴兴刚


报告摘要:

To solve the cusp-core problem, self-interacting dark matter (SIDM) and Axion-like particles (ALPs) are the two most popular directions nowadays. In this talk, I will explain how a low-energy effective field theory (EFT) can help to constrain the properties of SIDM. As an example, we have set up such a Zero-Range EFT (ZREFT) for SU(2)-triplet wino and have shown its agreement with the full theory at low energy. For ALPs, I will introduce the fascinating phenomenon that these ALPs form Bose-Einstein Condensate (BEC) under gravity. The size of the ALP BEC varies from the size of an asteroid to the size of a galactic halo, depending on the mass of ALP. I will focus on the dense BEC configuration we have proposed recently.


报告人介绍:

2008年获中国科技大学物理学士学位,2014年纽约州立大学石溪分校物理系博士学位,博士导师:邱建伟 教授,2014-2017俄亥俄州立大学博士后,合作导师 Eric Braaten 教授,2017-至今慕尼黑工业大学博士后,合作导师Martin Beneke 教授,目前从事QCD因子化理论、暗物质、暗能量等相关理论研究。先后在Phys. Rev. LettJHEP Phys. Rev. D等国际主流杂志发表论文20多篇,其中Phys. Rev. Lett 3篇。