Self-trapping and periodic modulation of Fermi gases in optical lattices

Gou, Xueqiang; Yan, Ming; Wei-Dong, Ling; Hongwei, Zhao; Duan, Wen‐Shan

doi:10.7498/aps.62.130308

Cited by 2 publications

(1 citation statement)

References 28 publications

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“…It is shown that there are four different phases, which are Josephson oscillation (JO), oscillatingphase-type self-trapping (OPTST), running-phase-type selftrapping (RPTST), and self-trapping (ST). [27][28][29][30][31][32][33] It is noted that the number density of the Fermi gas and the scattering length play a crucial role on the the trapping and tunneling of the Fermi gases. Some phenomena are observed and the explanations are given.…”

Section: Introductionmentioning

confidence: 99%

The effect of s-wave scattering length on self-trapping and tunneling phenomena of Fermi gases in one-dimensional accelerating optical lattices

Wang¹,

Dou²,

Sun³

et al. 2015

Chinese Phys. B

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We investigate the tunneling dynamics of the Fermi gases in an optical lattice in the Bose–Einstein condensation (BEC) regime. The three critical scattering lengths and the system energies are found in different cases of Josephson oscillation (JO), oscillating-phase-type self-trapping (OPTST), running-phase-type self-trapping (RPTST), and self-trapping (ST). It is found that the s-wave scattering lengths have a crucial role on the tunneling dynamics. By adjusting the scattering length in the adiabatic condition, the transition probability changes with the adiabatic periodicity and a rectangular periodic pattern emerges. The periodicity of the rectangular wave depends on the system parameters such as the periodicity of the adjustable parameter, the s-wave scattering length.

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Section: Introductionmentioning

confidence: 99%

The effect of s-wave scattering length on self-trapping and tunneling phenomena of Fermi gases in one-dimensional accelerating optical lattices

Wang¹,

Dou²,

Sun³

et al. 2015

Chinese Phys. B

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Asymptotic expressions of path curve for a class of Fermi gases in nonlinear disturbed mechanism

Shi¹,

Chen²,

Han³

et al. 2014

Acta Phys. Sin.

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The model of nonlinear disturbed mechanism for one-dimensional Fermi gas is investigated. Firstly, the corresponding functional is constructed; secondly, its Lagrange operator is selected; using the modified generalized variational iteration method, the approximate analytic solutions of corresponding path curves are obtained. A simple example is given, and the approximation accuracy obtained by using the modified generalized variational iteration method is shown to be better. The aim of this article is to provide a valid method of solving the nonlinear physical problems.

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Self-trapping and periodic modulation of Fermi gases in optical lattices

Cited by 2 publications

References 28 publications

The effect of s-wave scattering length on self-trapping and tunneling phenomena of Fermi gases in one-dimensional accelerating optical lattices

The effect of s-wave scattering length on self-trapping and tunneling phenomena of Fermi gases in one-dimensional accelerating optical lattices

Asymptotic expressions of path curve for a class of Fermi gases in nonlinear disturbed mechanism

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