Double screening

doi:10.1088/1475-7516/2016/06/033

Double screening

2016-06-15

7

OA

AI

DOI：10.1088/1475-7516/2016/06/033

原文链接

查看原文

摘要

En 中文

Attempts to modify gravity in the infrared typically require a screening mechanism to ensure consistency with local tests of gravity. These screening mechanisms fit into three broad classes; we investigate theories which are capable of exhibiting more than one type of screening. Specifically, we focus on a simple model which exhibits both Vainshtein and kinetic screening. We point out that due to the two characteristic length scales in the problem, the type of screening that dominates depends on the mass of the sourcing object, allowing for different phenomenology at different scales. We consider embedding this double screening phenomenology in a broader cosmological scenario and show that the simplest examples that exhibit double screening are radiatively stable.

Keyword:

dark energy theory

modified gravity

Double screening

摘要

AI总结

期刊

机构