额外维度的轴子图案

IF 5.3 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-04-08 DOI:10.1103/physrevd.111.075006

Arturo de Giorgi, Maria Ramos

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引用次数: 0

摘要

我们在平坦和弯曲的额外时空维度中研究了体轴子的参数空间。我们详细描述了沿着规范QCD轴子线不产生单一KK模的情况，相反，它与其他几个轴子一起最大程度地偏离，这些轴子构成了强CP问题的多重解。在平坦和Randall-Sundrum两种情况下，假设所有Peccei-Quinn破缺都来自QCD，我们发现这些解决方案都受到严格的现象学约束。根据这些结果，我们预计只有KK规范模式（零模式接近标准QCD线）可以从一个或多个额外时空维度的体轴子中出现。作为副产物，我们推广了轴子的特征值和特征向量方程，适用于任意数量的时空维度和紧化。2025年由美国物理学会出版

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Extra-dimensional axion patterns

We study the parameter space of a bulk axion in flat and warped extra spacetime dimensions. We characterize in detail the regimes where no single KK mode is produced along the canonical QCD axion line, and instead, it is maximally deviated along with several other axions that constitute a multiple solution to the strong CP problem. In both flat and Randall-Sundrum scenarios, and assuming that all Peccei-Quinn breaking comes from QCD, we find that these solutions are however subject to tight phenomenological constraints. In light of these results, we expect that only KK canonical patterns (with the zero-mode close to the standard QCD line) can emerge from a bulk axion in one or more extra spacetime dimensions. As a byproduct, we generalize the axions eigenvalue and eigenvector equations for an arbitrary number of spacetime dimensions and compactifications.

Published by the American Physical Society

2025

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.