Luminal scalar-tensor theories for a not so dark dark energy

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

Physical Review D Pub Date : 2025-05-07 DOI:10.1103/physrevd.111.l101501

S. Mironov, A. Shtennikova, M. Valencia-Villegas

引用次数: 0

Abstract

In general the speed of gravitational waves (GWs) in scalar-tensor modifications of Einstein’s gravity is different from the speed of light. Nevertheless, it has been measured that their speeds are nearly the same. For the most general scalar-tensor theories classified to date that do propagate a graviton—DHOST, —we show that, remarkably, up to five self-consistent couplings of the scalar of dark energy (DE) to the photon are enough to make their GWs luminal in a wide set of cases. We find at least one luminal BH theory for which the GW decay into DE is suppressed in any cosmological background.

Published by the American Physical Society

2025

查看原文本刊更多论文

不太暗的暗能量的光量张量理论

一般来说，爱因斯坦引力的标量张量修正中的引力波（GWs）的速度与光速不同。然而，经测量，它们的速度几乎是一样的。对于迄今为止分类的传播引力子dhost的最一般的标量张量理论，我们表明，值得注意的是，多达五次暗能量（DE）标量与光子的自一致耦合足以使它们的GWs在广泛的情况下发光。我们发现至少有一种光黑洞理论认为，在任何宇宙背景下，GW衰变成DE都是被抑制的。2025年由美国物理学会出版

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.