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arXiv 0912.4568cond-mat.quant-gascond-mat.stat-mech
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一维强吸引SU(N)费米子冷原子中的普适Tomonaga-Luttinger液相

Universal Tomonaga-Luttinger liquid phases in one-dimensional strongly attractive SU(N) fermionic cold atoms

X. W. Guan, J. -Y. Lee, M. T. Batchelor, X. -G. Yin, S. Chen

摘要:

本文导出了一组简单的代数方程组,用于求解具有扩大SU(N)自旋对称性和塞曼分裂的一维多分量强吸引费米子原子的精确低温热力学。由此确定了通用的多组分Tomonaga-Luttinger液相(TLL)。对于线性塞曼分裂,在低温下的无带隙相的物理属于一个两个组件的不对称TLL对应于自旋中性N-原子复合物和自旋-(N-1)/2单原子的普适类。该状态方程也为研究一维N组分费米气体布居数不平衡系统中的多组分TLL相提供了理论依据。

英文摘要:

A simple set of algebraic equations is derived for the exact low-temperature thermodynamics of one-dimensional multi-component strongly attractive fermionic atoms with enlarged SU(N) spin symmetry and Zeeman splitting. Universal multi-component Tomonaga-Luttinger liquid (TLL) phases are thus determined. For linear Zeeman splitting, the physics of the gapless phase at low temperatures belongs to the universality class of a two-component asymmetric TLL corresponding to spin-neutral N-atom composites and spin-(N-1)/2 single atoms. The equation of states is also obtained to open up the study of multi-component TLL phases in 1D systems of N-component Fermi gases with population imbalance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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