Decaying Gravity
广义相对论与量子宇宙学
2009-01-14 v2 天体物理学
高能物理 - 唯象学
摘要
We consider the possibility of energy being exchanged between the scalar and matter fields in scalar-tensor theories of gravity. Such an exchange provides a new mechanism which can drive variations in the gravitational 'constant' G. We find exact solutions for the evolution of spatially flat Friedman-Roberston-Walker cosmologies in this scenario and discuss their behaviour at both early and late times. We also consider the physical consequences and observational constraints on these models.
引用
@article{arxiv.gr-qc/0603116,
title = {Decaying Gravity},
author = {T. Clifton and John D. Barrow},
journal= {arXiv preprint arXiv:gr-qc/0603116},
year = {2009}
}
备注
13 pages