理学院数理讲坛（2013年第十二讲）
报告题目：Fulde-Ferrell pairing state in a Fermi gas with anisotropic SOC and Zeeman fields
报 告 人：易为教授（中国科技大学）
报告时间：5月31日（周五）下午：3:00
报告地点：龙赛理科楼北楼311报告厅
专家简介：2000年获中国科学技术大学理学学士学位，
2007年获密歇根大学物理学博士学位。
2007年至2010年先后于密歇根大学和因斯布鲁克大学理论物理所从事博士后研究工作。
2010年加入中国科学技术大学中科院量子信息重点实验室，任特任教授，主要从事基于超冷原子气体的量子调控和量子模拟方面的理论工作。
摘要:
We study the phase diagram of a two-dimensional ultracold Fermi gas with the synthetic spin-orbit coupling (SOC) that has recently been realized at NIST.
Due to the coexistence of anisotropic SOC and effective Zeeman fields in the NIST scheme,
the system shows rich structure of phase separation involving exotic gapless superfluid and Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) pairing states
with different center-of-mass momentum. In particular, we characterize the stability region of FFLO states and demonstrate their unique features under SOC.
We then show that the effective transverse Zeeman field in the NIST scheme can qualitatively change the landscape of the thermodynamic potential
which leads to intriguing effects such as the disappearance of pairing instability, the competition between different FFLO states,
and the stabilization of a fully gapped FFLO state. These interesting features may be probed for example by measuring the {\it in-situ} density profiles
or by the momentum-resolved radio-frequency spectroscopy.
欢迎感兴趣的老师和同学参加！