标题： 在玻色-爱因斯坦凝聚体中无序引起的涡旋晶格熔化 显示英文标题

标题： Disorder Induced Vortex Lattice Melting in Bose-Einstein Condensate

摘要： 我们研究在存在单个杂质以及随机杂质或无序情况下的涡旋晶格动力学。 我们表明，在存在单个杂质的情况下，涡旋晶格会发生畸变，这种畸变取决于单个杂质相对于无杂质阿布里科索夫涡旋晶格中涡旋位置的位置以及杂质势的强度。 然后我们表明，通过一组杂质可以在涡旋晶格中创建一种新型的巨大空洞，该空洞内部隐藏着涡旋。 在存在随机杂质势或无序的情况下，涡旋晶格会融化。 我们表明，在由两个光晶格叠加产生的伪随机势存在的情况下，涡旋晶格也会融化。 从结构因子图和每对涡旋之间距离的直方图中可以证明融化的涡旋晶格中没有长程有序。 显示英文摘要

摘要： We study the vortex lattice dynamics in presence of single impurity as well as random impurities or disorder. We show that in presence of a single impurity the vortex lattice gets distorted and the distortion depends on the position of the single impurity with respect to the positions of the vortices in the impurity free Abrikosov vortex lattice and also the strength of the impurity potential. We then show that a new type of giant hole with hidden vortices inside it can be created in the vortex lattice by a cluster of impurities. In presence of random impurity potential or disorder the vortex lattice melts. We show that the vortex lattice also melts in presence of pseudorandom potential generated by the superposition of two optical lattices. The absence of long-range order in the melted vortex lattice is demonstrated from the structure factor profile and the histogram of the distances between each pair of the vortices.