arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1802.08650hep-th
收藏

无序全息中的一种拖尾量子相变

A smeared quantum phase transition in disordered holography

Martin Ammon, Matteo Baggioli, Amadeo Jiménez-Alba, Sebastian Moeckel

摘要:

我们研究了一维淬火无序对全息Weyl半金属量子相变(QPT)的影响,特别关注量子临界区。我们观察到拖尾的尖锐的QPT连接到罕见的区域的外观在地平线上,局部的序参量是非零的。我们讨论的无序相关的作用,我们比较我们的结果从凝聚态理论在弱耦合的预期。我们还分析了有限温度和无序的相互作用。在量子临界区域内,我们发现的迹象表明存在的对数振荡结构的序参量暗示存在一个IR不动点与离散尺度不变性。

英文摘要:

We study the effects of quenched one-dimensional disorder on the holographic Weyl semimetal quantum phase transition (QPT), with a particular focus on the quantum critical region. We observe the smearing of the sharp QPT linked to the appearance of rare regions at the horizon where locally the order parameter is non-zero. We discuss the role of the disorder correlation and we compare our results to expectations from condensed matter theory at weak coupling. We analyze also the interplay of finite temperature and disorder. Within the quantum critical region we find indications for the presence of log-oscillatory structures in the order parameter hinting at the existence of an IR fixed point with discrete scale invariance.

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。

↑