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Thermodynamic properties of spin-imbalance harmonically trapped one-dimensional attractive 6Li atomic gas

    https://doi.org/10.1142/S0217979221500594Cited by:0 (Source: Crossref)

    The thermodynamic properties of 6Li atomic gas system, with imbalanced spin populations trapped in one-dimension, were systematically investigated using the Static Fluctuation Approximation. The two-body interaction used is an attractive contact potential. The effects of gas parameter 1(kFas) and spin polarization p, on the thermodynamic properties and effective magnetic field were investigated. We observed a decrease in μ and an enhancement in h and U with increasing p. At strong interaction and at T=0.1TF, the behavior of entropy with p indicated two different phases. At small spin polarization p<0.3, the system could be in Fulde–Ferrell–Larkin Ovchinnikov (FFLO) state, while above p=0.3, the system might be in normal state. In addition, we found a clear decrease in both μ and U and an enhancement in h with the increase of the interaction strength. Our results are consistent with the reported results obtained by the mean-field Bogoliubov–de Gennes method, the Bardeen–Cooper–Schrieffer (BCS) approximation and Nozieres–Schmitt–Rink (NSR) theory.

    PACS: 67.85-d, 05.70.Ce, 05.30.Fk
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