arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 0905.2943hep-thastro-ph.COgr-qc
收藏

k-莫弗拉格重力

k-Mouflage gravity

E. Babichev, C. Deffayet, R. Ziour

摘要:

我们介绍了一大类标量张量理论,其中引力通过与引力子混合的标量的交换在大距离处变得更强。在小的距离,即大曲率,标量屏蔽通过一个类似的万施泰因机制的大质量引力。通过适当地选择参数,可以使两个区域之间的交叉距离成为宇宙学的。

英文摘要:

We introduce a large class of scalar-tensor theories where gravity becomes stronger at large distances via the exchange of a scalar that mixes with the graviton. At small distances, i.e. large curvature, the scalar is screened via an analog of the Vainshtein mechanism of massive gravity. The crossover distance between the two regimes can be made cosmological by an appropriate choice of the parameters.

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。

↑