One-dimensional multicomponent fermions with delta-function interaction in strong- and weak-coupling limits: Two-component Fermi gas
Guan, XW; 马中骐; Ma, ZQ
刊名PHYSICAL REVIEW A
2012
卷号85期号:3页码:33632
学科分类Optics; Physics
DOI10.1103/PhysRevA.85.033632
英文摘要The Fredholm equations for one-dimensional two-component fermions with repulsive and with attractive delta-function interactions are solved by an asymptotic expansion for strong repulsion, weak repulsion, weak attraction, and strong attraction. Consequently, we obtain the first few terms of the expansion of the ground-state energy for the Fermi gas with polarization for these regimes. We also prove that the two sets of Fredhom equations for weakly repulsive and attractive interactions are identical as long as the integration boundaries match each other between the two types. Thus the asymptotic expansions of the energies of repulsive and attractive fermions are identical to all orders in this region. The identity of the asymptotic expansions may not mean that the energy connects analytically.
收录类别SCI
WOS记录号WOS:000301915400005
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被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224526
专题中国科学院高能物理研究所_理论物理室_期刊论文
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Guan, XW,马中骐; Ma, ZQ. One-dimensional multicomponent fermions with delta-function interaction in strong- and weak-coupling limits: Two-component Fermi gas[J]. PHYSICAL REVIEW A,2012,85(3):33632.
APA Guan, XW,&马中骐; Ma, ZQ.(2012).One-dimensional multicomponent fermions with delta-function interaction in strong- and weak-coupling limits: Two-component Fermi gas.PHYSICAL REVIEW A,85(3),33632.
MLA Guan, XW,et al."One-dimensional multicomponent fermions with delta-function interaction in strong- and weak-coupling limits: Two-component Fermi gas".PHYSICAL REVIEW A 85.3(2012):33632.
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