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arXiv 1303.4253hep-thcond-mat.str-elhep-ph
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三维Gross-Neveu模型中引力催化的重整化流

Renormalization flow towards gravitational catalysis in the 3d Gross-Neveu model

Holger Gies, Stefan Lippoldt

摘要:

催化对称性破缺产生于临界涨落的参量增强,与耦合强度无关。对称性破缺的费米子长程涨落在负弯曲空间上表现出这种增强,这是从平均场研究中得知的。本文以三维Gross-Neveu模型为例,从泛函重整化群的角度研究了引力催化。我们观察到重力催化对一个阶段的破碎离散手征对称性的最大对称(AdS)和一个纯粹的空间弯曲的流形上的恒定负曲率(罗巴切夫斯基平面)。从重整化流得到的引力催化的结果图像与磁催化的结果图像密切相关。作为一个应用,我们估计曲率所需的亚临界系统的有限长度,以获得重力催化的差距。

英文摘要:

Catalyzed symmetry breaking arises from a parametric enhancement of critical fluctuations independently of the coupling strength. Symmetry-breaking fermionic long-range fluctuations exhibit such an enhancement on negatively curved spaces, as is known from mean-field studies. We study gravitational catalysis from the viewpoint of the functional renormalization group using the 3d Gross-Neveu model as a specific example. We observe gravitational catalysis towards a phase of broken discrete chiral symmetry both on a maximally symmetric (AdS) and on a purely spatially curved manifold for constant negative curvature (Lobachevsky plane). The resulting picture for gravitational catalysis obtained from the renormalization flow is closely related to that of magnetic catalysis. As an application, we estimate the curvature required for subcritical systems of finite length to acquire a gravitionally catalyzed gap.

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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