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Towards Singularity- and Ghost-Free Theories of Gravity

Year: 2012
Type: article
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.
DOI: 10.1103/physrevlett.108.031101
Institutions: Loyola University New Orleans, University of Göttingen, University of Oslo, Utrecht University, University of Copenhagen, Lancaster University
Language: English
Open Access status: green
OpenAlex ID: W1973723463
FWCI: 22.34
Cites: 23
Cited by: 808
Related to: 10