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arXiv 1102.1450cond-mat.quant-gas
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玻色-费米超流混合体的相变温度研究

Finite-Temperature Study of Bose-Fermi Superfluid Mixtures

B. Ramachandhran, S. G. Bhongale, H. Pu

摘要:

超冷原子实验为研究不同类型超流态的混合提供了独特的机会。我们的兴趣是在超流体混合物包括粒子与不同的统计-玻色和费米。这种情形自然发生,例如,在致密的QCD物质中。有趣的是,冷原子实验是在有限空间范围的陷阱中进行的,因此严重破坏了各种均匀相的发生。这个分析的关键是理解被捕获的系统可以经历相分离,导致一种独特的情况,其中任何一种物质(玻色子或费米子)的相变可以与可能的相之间的相分离重叠。在目前的工作中,我们说明了这种有趣的相互作用如何体现在一个相互作用的2种原子混合物-一个玻色子和另一个费米子与两个自旋组件-在一个现实的陷阱配置。我们进一步表明,这种相互作用的过渡可以呈现的性质的基态是高度敏感的实验参数和系统的维数。

英文摘要:

Ultra-cold atom experiments offer the unique opportunity to study mixing of different types of superfluid states. Our interest is in superfluid mixtures comprising particles with different statistics- Bose and Fermi. Such scenarios occur naturally, for example, in dense QCD matter. Interestingly, cold atomic experiments are performed in traps with finite spatial extent, thus critically destabilizing the occurrence of various homogeneous phases. Critical to this analysis is the understanding that the trapped system can undergo phase separation, resulting in a unique situation where phase transition in either species (bosons or fermions) can overlap with the phase separation between possible phases. In the present work, we illustrate how this intriguing interplay manifests in an interacting 2-species atomic mixture - one bosonic and another fermionic with two spin components - within a realistic trap configuration. We further show that such interplay of transitions can render the nature of the ground state to be highly sensitive to the experimental parameters and the dimensionality 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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