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arXiv 1204.3103hep-thcond-mat.str-elcond-mat.supr-con
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纯全息超导体的非平衡场动力学

Non-Equilibrium Field Dynamics of an Honest Holographic Superconductor

Xin Gao, Matthias Kaminski, Hua-Bi Zeng, Hai-Qing Zhang

摘要:

大多数超导系统的全息模型忽略了动态边界规范场在自发对称性破缺过程中的作用。一般来说,整体对称性会被打破。这就产生了一种超流体,然后用“微弱”的方法来测量。在这项工作中,我们建立(和探测动力学)的全息模型,其中的局部边界对称性自发破缺。本文计算了动力学非阿贝尔规范场在正常相和破缺相的两点函数,并找到了非平凡的无隙模。我们的AdS3引力对偶实现了(1+1)维的p波超导体。该模型的基态也自发破缺(1+1)维宇称,而哈密顿量是宇称不变的。我们讨论了可能的影响,我们的结果更广泛的全息液体类。

英文摘要:

Most holographic models of superconducting systems neglect the effects of dynamical boundary gauge fields during the process of spontaneous symmetry-breaking. Usually a global symmetry gets broken. This yields a superfluid, which then is gauged "weakly" afterwards. In this work we build (and probe the dynamics of) a holographic model in which a local boundary symmetry is spontaneously broken instead. We compute two-point functions of dynamical non-Abelian gauge fields in the normal and in the broken phase, and find non-trivial gapless modes. Our AdS3 gravity dual realizes a p-wave superconductor in (1+1) dimensions. The ground state of this model also breaks (1+1)-dimensional parity spontaneously, while the Hamiltonian is parity-invariant. We discuss possible implications of our results for a wider class of holographic liquids.

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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