扭动的膨胀：一个自发破碎的尺度不变性的景观

IF 4.3 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Physics Letters B Pub Date : 2025-05-08 DOI:10.1016/j.physletb.2025.139534

Sudhakantha Girmohanta , Yuichiro Nakai , Yu-Cheng Qiu , Zhihao Zhang

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引用次数: 0

摘要

在近共形场论（CFT）中，膨胀子以与尺度不变性自发破缺有关的伪nambu - goldstone玻色子（pNGB）的形式出现。我们证明了在五维（5D）全息公式中包含多个真空溶液的扭动膨胀势的存在。该摆动特征来源于5D类轴子标量场的边界势，其固有的小体积质量参数对应于对偶CFT的边缘相关变形。根据边界3膜的能量密度，我们的模型可以提供一个松弛势或产生一个光膨胀。然而，极轻的膨胀需要微调。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Wiggly dilaton: A landscape of spontaneously broken scale invariance

The dilaton emerges as a pseudo-Nambu-Goldstone boson (pNGB) associated with the spontaneous breaking of scale invariance in a nearly conformal field theory (CFT). We show the existence of a wiggly dilaton potential that contains multiple vacuum solutions in a five-dimensional (5D) holographic formulation. The wiggly feature originates from boundary potentials of a 5D axion-like scalar field, whose naturally small bulk mass parameter corresponds to a marginally-relevant deformation of the dual CFT. Depending on the energy density of a boundary 3-brane, our model can provide a relaxion potential or generate a light dilaton. However, an extremely light dilaton requires fine-tuning.

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来源期刊

Physics Letters B 物理-物理：综合

CiteScore

9.10

自引率

6.80%

发文量

647

审稿时长

3 months

期刊介绍： Physics Letters B ensures the rapid publication of important new results in particle physics, nuclear physics and cosmology. Specialized editors are responsible for contributions in experimental nuclear physics, theoretical nuclear physics, experimental high-energy physics, theoretical high-energy physics, and astrophysics.