| Literature DB >> 22400725 |
Tirthabir Biswas1, Erik Gerwick, Tomi Koivisto, Anupam Mazumdar.
Abstract
We present the most general covariant ghost-free gravitational action in a Minkowski vacuum. Apart from the much studied f(R) models, this includes a large class of nonlocal actions with improved UV behavior, which nevertheless recover Einstein's general relativity in the IR.Year: 2012 PMID： 22400725 DOI： 10.1103/PhysRevLett.108.031101
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161