报告题目:Spontaneous increase of magnetic flux and chiral-current reversal in bosonic ladders: Swimming against the tide
报告人：Teimuraz Vekua 博士
报告时间：上午9:00
报告地点：屏峰校区理A110
Teimuraz Vekua 博士
德国莱比锡大学理论物理中心
2016年3月7日上午9:00
地点：屏峰校区理A110
Title：Spontaneous increase of magnetic flux and chiral-current reversal in bosonic ladders: Swimming against the tide
Abstract: The interplay between the spontaneous symmetry breaking in many-body systems and the wave-like nature of
quantum particles in lattices produces an extraordinary behavior of the chiral current of interacting bosonic particles in the presence
of a uniform magnetic flux defined on a two-leg ladder. While non-interacting as well as strongly interacting particles,
stirred by the magnetic field circulate along the system's boundary in the counterclockwise direction, for certain interactions between
particles and at sufficiently low temperature, the circulation direction of chiral current can be spontaneously reversed in vortex
lattice states. Chiral-current reversal is counter-intuitive many-body effect produced by synthetic magnetism.