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arXiv 1209.2897cond-mat.quant-gascond-mat.str-el
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任意相互作用下自旋轨道耦合玻色气体的基态性质

Ground State Properties of Spin-Orbit Coupled Bose Gases for Arbitrary Interactions

Renyuan Liao, Zhi-Gao Huang, Xiu-Min Lin, Wu-Ming Liu

摘要:

本文发展了一种场积分方法来研究具有任意种间相互作用的自旋轨道耦合玻色气体。我们确定的SOC和种间相互作用的相互作用所产生的各种功能,包括在激发光谱和SOC的基态能量取决于种间相互作用的双重影响的最小的旋子。反直觉地,我们发现,在低物种间的相互作用的SOC稳定的系统,通过抑制量子耗尽。我们表明,静态结构因子是免疫的SOC在相空间中的时间反演对称性被保存。此外,我们提出了另一种方法来研究系统的相位起伏。

英文摘要:

We develop a field integral formalism to study spin-orbit-coupled (SOC) Bose gases with arbitrary interspecies interaction. We identify various features arising from the interplay of SOC and interspecies interaction, including a roton minimum in the excitation spectrum and dual effects of SOC on ground-state energies depending on interspecies interactions. Counterintuitively, we find that at low interspecies interaction the SOC stabilizes the system by suppressing the quantum depletion. We show that the static structure factor is immune to the SOC in the phase space where time-reversal symmetry is preserved. Furthermore, we present an alternate way of studying phase fluctuations of the system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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