自发破缺的 (-1)-form U(1) 对称性

IF 4.6 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

SciPost Physics Pub Date : 2024-08-01 DOI:10.21468/scipostphys.17.2.031

Daniel Aloni, Eduardo García-Valdecasas, Matthew Reece, Motoo Suzuki

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引用次数: 0

摘要

对称性的自发破缺会导致普遍现象。我们将这一概念扩展到 $(-1)$-form U(1) 对称性。自发破缺是通过真空能量对恒定背景场 $\theta$ 的依赖性来诊断的，这种依赖性可以通过拓扑易感性来探测。这就把强 CP 问题重新解释为由 QCD 中自发破缺的瞬时对称性引起的。我们讨论了已知的问题解决方案如何在这一框架中得到统一，并探讨了一些迄今为止尚未成功的寻找新解决方案的尝试。

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Spontaneously broken (-1)-form U(1) symmetries

Spontaneous breaking of symmetries leads to universal phenomena. We extend this notion to $(-1)$-form U(1) symmetries. The spontaneous breaking is diagnosed by a dependence of the vacuum energy on a constant background field $\theta$, which can be probed by the topological susceptibility. This leads to a reinterpretation of the Strong CP problem as arising from a spontaneously broken instantonic symmetry in QCD. We discuss how known solutions to the problem are unified in this framework and explore some, so far unsuccessful, attempts to find new solutions.

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来源期刊

SciPost Physics Physics and Astronomy-Physics and Astronomy (all)

CiteScore

8.20

自引率

12.70%

发文量

315

审稿时长

10 weeks

期刊介绍： SciPost Physics publishes breakthrough research articles in the whole field of Physics, covering Experimental, Theoretical and Computational approaches. Specialties covered by this Journal: - Atomic, Molecular and Optical Physics - Experiment - Atomic, Molecular and Optical Physics - Theory - Biophysics - Condensed Matter Physics - Experiment - Condensed Matter Physics - Theory - Condensed Matter Physics - Computational - Fluid Dynamics - Gravitation, Cosmology and Astroparticle Physics - High-Energy Physics - Experiment - High-Energy Physics - Theory - High-Energy Physics - Phenomenology - Mathematical Physics - Nuclear Physics - Experiment - Nuclear Physics - Theory - Quantum Physics - Statistical and Soft Matter Physics.