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arXiv 0710.4498cond-mat.str-el
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外磁场中一维哈伯德模型的Mott金属-绝缘体相变

The Mott metal-insulator transition in the 1D Hubbard model in an external magnetic field

Holger Frahm, Temo Vekua

摘要:

研究了在外加磁场中一维哈伯德模型在Mott金属-绝缘体相变过程中的低能行为。特别是,我们计算任意哈伯德排斥和磁化数值和在某些限制情况下,分析的莫特过渡的临界点处的修饰电荷矩阵的元素。结合非微扰有效场论方法,揭示了时间反演对称性破缺对Mott跃迁的影响。

英文摘要:

We study the low energy behavior of the one dimensional Hubbard model across the Mott metal-insulator phase transition in an external magnetic field. In particular we calculate elements of the dressed charge matrix at the critical point of the Mott transition for arbitrary Hubbard repulsion and magnetization numerically and, in certain limiting cases, analytically. These results are combined with a non-perturbative effective field theory approach to reveal how the breaking of time reversal symmetry influences the Mott transition.

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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