Biswas, Tirthabir and Gerwick, Erik and Koivisto, Tomi and Mazumdar, Anupam (2012) Towards singularity and ghost free theories of gravity. Physical review letters, 108 (3): 031101. ISSN 1079-7114
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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 non-local actions with improved UV behavior, which nevertheless recover Einstein's general relativity in the IR.
Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
4 pages; redundancies in action eliminated; references added and a few minor typos corrected © 2012 American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/core/keywords/physics
Subjects:
?? physicsgeneral physics and astronomyphysics and astronomy(all)qc physics ??
Departments:
ID Code:
55943
Deposited By:
Deposited On:
19 Jul 2012 15:39
Refereed?:
Yes
Published?:
Published
Last Modified:
09 Oct 2024 00:02