Simulating an Interacting Gauge Theory with Ultracold Bose Gases
Simulating an Interacting Gauge Theory with Ultracold Bose Gases
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DOI：
10.1103/physrevlett.110.085301
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发表时间：
2013-02-19
影响因子：
8.6
通讯作者：
Oehberg, P.
中科院分区：
文献类型：
--
作者：
Edmonds, M. J.;Valiente, M.;Oehberg, P.
我们展示了如何利用光-物质相互作用在超冷原子的稀释气体中诱导密度依赖的规范势。我们研究了由此产生的相互作用规范理论的影响，并展示了它如何在超冷气体中产生新的拓扑状态。我们特别发现，在环形几何中持续电流的开始是由临界数量的粒子控制的。密度相关的规范势也被发现支持准一维超冷玻色气体中的手性孤子。DOI: 10.1103 / PhysRevLett.110.085301
We show how density dependent gauge potentials can be induced in dilute gases of ultracold atoms using light-matter interactions. We study the effect of the resulting interacting gauge theory and show how it gives rise to novel topological states in the ultracold gas. We find in particular that the onset of persistent currents in a ring geometry is governed by a critical number of particles. The density-dependent gauge potential is also found to support chiral solitons in a quasi-one-dimensional ultracold Bose gas. DOI: 10.1103/PhysRevLett.110.085301