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arXiv 0804.3364cond-mat.supr-conhep-phnucl-th
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酉费米超固体:Larkin-Ovchinnikov相

A Unitary Fermi Supersolid: The Larkin-Ovchinnikov Phase

Aurel Bulgac, Michael McNeil Forbes

摘要:

我们提出了强有力的理论证据表明,一个拉金Ovchinnikov(LOFF/FFLO)配对相是有利于在三维酉费米系统的均匀超流和正常相。使用密度泛函理论(DFT)的基础上,最新的量子Monte-Carlo计算和实验结果,我们表明,这个阶段是竞争性的相图的大区域。数密度和配对场的振荡具有相当大的振幅,其周期约为粒子间平均间距的3 ~ 10倍。在密度泛函理论中,在大的极化下,向正常极化的费米液体的过渡是平滑的,而向完全成对的超流体的过渡是突然的。

英文摘要:

We present strong theoretical evidence that a Larkin-Ovchinnikov (LOFF/FFLO) pairing phase is favoured over the homogeneous superfluid and normal phases in three-dimensional unitary Fermi systems. Using a Density Functional Theory (DFT) based on the latest quantum Monte-Carlo calculations and experimental results, we show that this phase is competitive over a large region of the phase diagram. The oscillations in the number densities and pairing field have a substantial amplitude, and a period some 3 to 10 times the average interparticle separation. Within the DFT, the transition to a normal polarized Fermi liquid at large polarizations is smooth, while the transition to a fully-paired superfluid is abrupt.

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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