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On scale-free extensions of massive (bi-)gravity

Abstract:

We discuss a scale-free model of bigravity, in which the mass parameter of the standard bigravity potential is promoted to a dynamical scalar field. This modification retains the ghost-free bigravity structure, in particular it remains free of the Boulware- Deser ghost. We investigate the theory's interaction structure, focusing on its consistent scaling limits and strong coupling scales. Furthermore we explore the model's quadratic action, both around generic background configurations and pa...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1007/JHEP02(2017)098

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author
More from this funder
Name:
BIPAC
Funding agency for:
Noller, J
More from this funder
Name:
Royal Commission for the Exhibition of 1851
Funding agency for:
Noller, J
More from this funder
Name:
Swiss National Science Foundation
Funding agency for:
Cusin, G
Publisher:
Springer Verlag
Journal:
Journal of High Energy Physics More from this journal
Volume:
2017
Issue:
98
Pages:
1-35
Publication date:
2017-01-01
Acceptance date:
2017-01-27
DOI:
EISSN:
1029-8479
Keywords:
Pubs id:
pubs:676000
UUID:
uuid:c8443e87-85e4-4568-bacd-4288a7dbc855
Local pid:
pubs:676000
Source identifiers:
676000
Deposit date:
2017-02-06

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