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arXiv 2202.01495hep-thgr-qc
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一种新的全息量子相变和蝴蝶速度

A novel holographic quantum phase transition and butterfly velocity

Guoyang Fu, Xi-Jing Wang, Peng Liu, Dan Zhang, Xiao-Mei Kuang, Jian-Pin Wu

摘要:

本文对Einstein-Maxwell-Maxion-axions(EMDA)模型中的相结构和蝴蝶速度行为进行了系统而深入的研究。根据模型参数的不同,该模型中存在两种驱动量子相变(QPT)的机制。一个是红外(IR)几何是重整化群(RG)不稳定的,另一个是晶格变形的强度导致某种分岔解。我们还发现了一个新的QPT的金属相。对蝴蝶速度穿越QPT的行为研究表明,蝴蝶速度或其一阶导数出现局部极值取决于QPT机制。此外,蝶形速度在零温度极限下的标度行为证实了不同的相位由不同的IR几何结构控制。因此,蝶形速度是研究QPT的一个很好的探针,也为超越全息研究QPT提供了一种可能的途径。

英文摘要:

In this paper, we make a systematical and in-depth exploration on the phase structure and the behaviors of butterfly velocity in an Einstein-Maxwell-dilaton-axions (EMDA) model. Depending on the model parameter, there are two kinds of mechanisms driving quantum phase transition (QPT) in this model. One is the infrared (IR) geometry to be renormalization group (RG) unstable, and the other is the strength of lattice deformation leading to some kind of bifurcating solution. We also find a novel QPT in the metal phases. The study on the behavior of the butterfly velocity crossing QPT indicates that the butterfly velocity or its first derivative exhibiting local extreme depends on the QPT mechanism. Further, the scaling behaviors of the butterfly velocity in the zero-temperature limit confirm that different phases are controlled by different IR geometries. Therefore, the butterfly velocity is a good probe to QPT and it also provides a possible way to study QPT beyond holography.

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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