期刊
PHYSICAL REVIEW D
卷 97, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.97.084004
关键词
-
资金
- Labex P2IO
- Enhanced Eurotalents Fellowship
- STFC Grant [ST/N000668/1]
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (Grant CosTesGrav) [646702]
- STFC [ST/N000668/1, ST/J005428/1] Funding Source: UKRI
The recent simultaneous detection of gravitational waves and a gamma-ray burst from a neutron star merger significantly shrank the space of viable scalar-tensor theories by demanding that the speed of gravity is equal to that of light. The survived theories belong to the class of degenerate higher order scalar-tensor theories. We study whether these theories are suitable as dark energy candidates. We find scaling solutions in the matter dominated universe that lead to de Sitter solutions at late times without the cosmological constant, realizing self-acceleration. We evaluate quasistatic perturbations around self-accelerating solutions and show that the stringent constraints coming from astrophysical objects and gravitational waves can be satisfied, leaving interesting possibilities to test these theories by cosmological observations.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据