非旋转玻色-爱因斯坦凝聚体中涡格的形成和熔化
Vortex-lattice formation and melting in a nonrotating Bose-Einstein condensate
摘要：
对三向分段非旋转玻色-爱因斯坦凝聚体干涉的数值模拟揭示了包含大量涡旋和反涡旋的蜂窝状涡旋晶格的产生。如果被限制在陷阱内，晶格随后熔化，表现出丰富的涡旋-反涡旋相互作用。与先前描述的玻色-爱因斯坦凝聚体的非线性涡旋产生机制相比，这里的过程主要是线性叠加的过程，初始涡旋位置近似由波包干涉的线性理论描述。
英文摘要：
Numerical simulations of the interference of a three-way segmented nonrotating Bose-Einstein condensate reveal the production of a honeycomb vortex lattice containing significant numbers of vortices and antivortices. If confined within a trap, the lattice subsequently melts, exhibiting a rich assortment of vortex-antivortex interactions. In contrast with nonlinear vortex production mechanisms previously described for Bose-Einstein condensates, the process here is shown to be primarily one of linear superposition, with initial vortex locations approximately described by a linear theory of wave packet interference.
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