两个解耦的一维玻色-爱因斯坦凝聚体的退相和阱间相干的亚指数衰减
Dephasing in two decoupled one-dimensional Bose-Einstein condensates and the subexponential decay of the interwell coherence
摘要：
我们提供了一个简单的物理图像的损失之间的相干分裂的一维玻色-爱因斯坦凝聚体的相干性。失相的来源被确定与非线性校正的两个独立的凝聚体中的任一个的基本激发能。我们恢复Burkov，Lukin和Demler的结果[Phys. Rev. Lett. 98，200404（2007）]，然而，特征退相干时间的标度不同。
英文摘要：
We provide a simple physical picture of the loss of coherence between two coherently split one-dimensional Bose-Einstein condensates. The source of the dephasing is identified with nonlinear corrections to the elementary excitation energies in either of the two independent condensates. We retrieve the result by Burkov, Lukin and Demler [Phys. Rev. Lett. 98, 200404 (2007)] on the subexponential decay of the cocherence for the large time, however, the scaling of the characteristic decoherence time differs.
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