| Speckle无序对一维谐振势中自旋极化费米气体的影响 |
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| 引用本文： | 汪泾泾,高先龙. Speckle无序对一维谐振势中自旋极化费米气体的影响[J]. 浙江师范大学学报(自然科学版), 2011, 0(4): 420-424 |
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| 作者姓名： | 汪泾泾 高先龙 |
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| 作者单位： | 浙江师范大学数理与信息工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(10974181) |
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| 摘 要： | 基于局域密度近似的Bethe-ansatz方法,研究了谐振势中两组分一维自旋极化费米气体的基态性质,以及无序对其影响.对于无外势的干净系统,基态是完全配对的Bardeen-Cooper-Schrieffer(BCS)相,或部分极化的Fulde-Ferrell-Larkin-Ovchinnikov(FFLO)相,或完全极化的正常相.当系统中存在谐振势但仍干净时,系统成为两相混合的状态:中间部分是FFLO相;边缘部分或为BCS相,或为正常相.这之间存在一个临界相,即纯的FFLO相.发现当外势和无序共同存在,总极化强度固定时,随着无序振幅的增强,系统能从FFLO-BCS相变为FFLO-N(FFLO-Normal)相.
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| 关 键 词： | 无序 一维 自旋极化 费米气体 |
The effect of speckle disorder on a one-dimension spin-polarized Fermi gas under harmonic confinement |
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| WANG Jingjing,GAO Xianlong. The effect of speckle disorder on a one-dimension spin-polarized Fermi gas under harmonic confinement[J]. Journal of Zhejiang Normal University Natural Sciences, 2011, 0(4): 420-424 |
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| Authors: | WANG Jingjing GAO Xianlong |
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| Affiliation: | WANG Jingjing,GAO Xianlong(College of Mathematics,Physics and Information Engineering,Zhejiang Normal University,Jinhua Zhejiang 321004,China) |
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| Abstract: | A numerical study was conducted on a one-dimensional attractive Gaudin model of confined two-component polarized Fermi gas in the presence of the speckle disorder by making use of the local-density approximation based on the exact Bethe-ansatz solution.For a clean system without trapping,the ground state was a partially polarized Fulde-Ferrell-Larkin-Ovchinnikov(FFLO) state,a fully paired Bardeen-Cooper-Schrieffer(BCS) state,or a fully polarized normal state.For a clean system in the presence of a harmonic ... |
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| Keywords: | disorder one dimension spinpolarization Fermi gas |
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