Non-equilibrium field dynamics of an honest holographic superconductor
Non-equilibrium field dynamics of an honest holographic superconductor
复制标题
DOI：
10.1007/jhep11(2012)112
复制
发表时间：
2012-04
影响因子：
5.4
通讯作者：
Xin Gao;M. Kaminski;H. Zeng;Hai-Qing Zhang
中科院分区：
文献类型：
--
作者：
Xin Gao;M. Kaminski;H. Zeng;Hai-Qing Zhang
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。通常全局对称性会被打破。这就产生了一种超流体，然后对其进行“弱”测量。在这项工作中，我们建立并探索了一个局部边界对称被自发打破的全息模型的动力学。我们计算了非阿贝尔规范场在正常相位和破缺相位的两点函数，并找到了非平凡的无间隙模态。我们的ad3重力对偶实现了（1+ 1）维的p波超导体。该模型的基态也自发地打破（1+ 1）维宇称，而哈密顿量是宇称不变的。我们讨论了我们的结果对更广泛的全息液体的可能影响。
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 AdS 3 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.