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arXiv 1111.4373cond-mat.str-el
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双阶梯结构超导相的重整化群指数

Renormalization-group exponents for superconducting phases in two-leg ladders

Yiwei Cai, Wen-Min Huang, Hsiu-Hau Lin

摘要:

在以前的研究中,我们提出了一个电子-电子相互作用在重整化群变换下的标度系数。随着声子介导的相互作用的列入,我们表明,标度的anadrians,其特征在于由发散的对数长度$l_d$和一组重整化群指数,也工作得相当不错。作为示范,本文用这些重整化群指数研究了掺杂双梯形结构中的超导相,并对其进行了分类。最后,非平凡的指数之间的约束推导和解释。

英文摘要:

In previous studies, we proposed a scaling ansatz for electron-electron interactions under renormalization group transformation. With the inclusion of phonon-mediated interactions, we show that the scaling ansatz, characterized by the divergent logarithmic length $l_d$ and a set of renormalization-group exponents, also works rather well. The superconducting phases in a doped two-leg ladder are studied and classified by these renormalization-group exponents as demonstration. Finally, non-trivial constraints among the exponents are derived and explained.

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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