arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1710.02485astro-ph.CO
收藏

标量-张量引力理论中宇宙结构的稳定性

Stability of cosmic structures in scalar-tensor theories of gravity

Grigoris Panotopoulos, Angel Rincon

摘要:

本文研究了一个以两个自由参数为特征的标量-张量引力理论的具体模型,并将它的预言与来自超新星、太阳系实验以及宇宙结构稳定性的观测数据和约束条件进行了比较。首先,在背景水平下获得精确的解析解。然后使用该解计算转弯半径的表达式。最后,我们以图形方式显示当前数据和限制如何限制模型的参数。

英文摘要:

In the present work we study a concrete model of Scalar--Tensor theory of gravity characterized by two free parameters, and compare its predictions against observational data and constraints coming from supernovae, solar system tests as well as the stability of cosmic structures. First an exact analytical solution at the background level is obtained. Then using that solution the expression for the turnaround radius is computed. Finally we show graphically how current data and limits put bounds on the parameters of the model at hand.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑