Species Scale and Primordial Gravitational Waves

IF 5.6 3区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Fortschritte Der Physik-Progress of Physics Pub Date : 2024-05-06 DOI:10.1002/prop.202400033

Marco Scalisi

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Abstract

The species scale is a field-dependent UV cut-off for any effective field theory weakly coupled to gravity. In this letter, it is shown that in the context of inflationary cosmology, a detection of primordial gravitational waves will set an upper bound on the decay rate $| Λ_{s}^{'} / Λ_{s} |$ of the species scale. Specifically, this is derived in terms of the tensor-to-scalar ratio $r$ of power spectra of primordial perturbations. Given the targets of current and next generation experiments, it is shown that any successful detection would signify that this upper limit is of the order of unity, which is consistent with recent discussions in the literature.

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物种尺度与原始引力波

对于任何与引力弱耦合的有效场论来说，种尺度都是一个取决于场的紫外截止值。这封信表明，在暴胀宇宙学的背景下，原始引力波的探测将为物种尺度的衰减率设定一个上限。具体地说，这是根据原始扰动功率谱的张量与尺度比推导出来的。考虑到当前和下一代实验的目标，研究表明，任何成功的探测都将意味着这个上限是统一量级的，这与最近文献中的讨论是一致的。

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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来源期刊

Fortschritte Der Physik-Progress of Physics 物理-物理：综合

CiteScore

6.70

自引率

7.70%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal Fortschritte der Physik - Progress of Physics is a pure online Journal (since 2013). Fortschritte der Physik - Progress of Physics is devoted to the theoretical and experimental studies of fundamental constituents of matter and their interactions e. g. elementary particle physics, classical and quantum field theory, the theory of gravitation and cosmology, quantum information, thermodynamics and statistics, laser physics and nonlinear dynamics, including chaos and quantum chaos. Generally the papers are review articles with a detailed survey on relevant publications, but original papers of general interest are also published.