地点：教511
主讲人：田雨
联系人：张余洋
联系方式：15120062397
开始时间：2021-04-07 15:30
结束时间：2021-04-07 17:00
内容：
物理科学学院邀请北京大学徐仁新教授做学院本学期学术交流首场报告，欢迎各位老师同学参加。
报告题目：奇异星路线图（A roadmap to strange star）
报告人简介：徐仁新，北京大学物理学院教授；国家杰出青年科学基金获得者，入选教育部“新世纪优秀人才支持计划”。1997年获北京大学理学博士，并留校先后任讲师、副教授和教授。主要从事脉冲星相关的粒子天体物理研究，关注致密物质物态及其若干天体物理表现、宇宙早期强子化相变等科学问题。兼任“中国科学：物理力学天文”期刊中英文版编委、中国科学院“粒子天体物理重点实验室”和“FAST重点实验室”学术委员会委员等职。
报告摘要：What if normal baryonic matter is compressed so tightly that atomic nuclei come into close contact? This question has been asked since 1930s. The fist answer was presented by Lev Landau whose speculation has been developed, and the concept of neutron star is then popularized. However, another answer is related to strange star, which becomes worthy of attention especially after the establishment of the standard model of particle physics in 1960s. The basic ideas of this study are introduced pedagogically. We must point out emphatically that flavour symmetry of and strong coupling between quarks would be essential in seeking true answer to the question. The final answer is expected to appear in the era of multimessenger astronomy. It is emphasized too that, besides the differences of global properties (e.g., mass-radius relation, maximum mass, tidal deformability), the strong-bound surface of strange star (rather than the gravity-bound one for conventional neutron star) could play an important role in identifying a strange star by astronomical observations.