报告题目（Title）：Transverse instability and disintegration of domain wall of relative phase in coherently coupled two-component Bose-Einstein condensates
报 告 人（Speaker）：Kenichi Kasamatsu 副教授 (日本近畿大学)
报告时间（Time）： 2019年9月4日（周三） 9:30
报告地点（Place）：校本部G309
邀请人（inviter）：张永平
摘要（Abstract）：
We study transverse instability and disintegration dynamics of a domain wall of a relative phase in two-component Bose-Einstein condensates with a coherent Rabi coupling. We obtain analytically the stability phase diagram of the stationary solution of the domain wall for the one-dimensional coupled Gross-Pitaevskii equations in the plane of the Rabi frequency and the intercomponent coupling constant. Outside the stable region, the domain wall is dynamically unstable for the transverse modulation along the direction perpendicular to the phase kink. The nonlinear evolution associated with the instability is demonstrated through numerical simulations for both the domain wall without edges and that with edges formed by the quantized vortices.
