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Peierls instability of the quasi-one-dimensional Bose-Fermi mixed gas

机译:准一维Bose-Fermi混合气体的Peierls不稳定性

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摘要

The mixtures of quantum degenerate Bose and Fermi gases in highly anisotropic traps at zero temperature are studied. It is found that under some conditions the system becomes unstable with respect to the spontaneous formation of the collective mode with wave vector 2k(F) (k(F) is a Fermi wave vector) by exploring the Bogoliubov phonon spectrum. This type of instability is the analogue of Peierls instability in quasi-one-dimensional conductors. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 4]
机译:研究了零温度下高各向异性阱中量子简并的玻色和费米气体的混合物。通过探索Bogoliubov声子谱,发现在某些条件下,系统相对于波矢量2k(F)(k(F)是费米波矢量)的自发形成集体模式变得不稳定。这种类型的不稳定性类似于准一维导体中的Peierls不稳定性。 (C)2002 Elsevier Science B.V.保留所有权利。 [参考:4]

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