Improved positivity bounds and massive gravity
File(s)10.1007%2FJHEP04(2018)083.pdf (1.67 MB)
Published version
Author(s)
de Rham, Claudia
Melville, Scott
Tolley, Andrew J
Type
Journal Article
Abstract
Theories such as massive Galileons and massive gravity can satisfy the presently known improved positivity bounds provided they are weakly coupled. We discuss the form of the EFT Lagrangian for a weakly coupled UV completion of massive gravity which closely parallels the massive Galileon, and perform the power counting of corrections to the scattering amplitude and the positivity bounds. The Vainshtein mechanism which is central to the phenomenological viability of massive gravity is entirely consistent with weak coupling since it is classical in nature. We highlight that the only implication of the improved positivity constraints is that the EFT cutoff is lower than previous assumed, and discuss the observable implications, emphasizing that these bounds are not capable of ruling out the model contrary to previous statements in the literature.
Date Issued
2018-04-16
Date Acceptance
2018-04-03
Citation
Journal of High Energy Physics, 2018, 2018 (4)
ISSN
1029-8479
Publisher
Springer Verlag (Germany)
Journal / Book Title
Journal of High Energy Physics
Volume
2018
Issue
4
Copyright Statement
© The Authors. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited (https://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000430567800003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
Classical Theories of Gravity
Effective Field Theories
Cosmology of Theories beyond the SM
Global Symmetries
LOCALITY
Publication Status
Published
Article Number
ARTN 083
Date Publish Online
2018-04-16