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No fifth force in a scale invariant universe

Abstract:
We revisit the possibility that the Planck mass is spontaneously generated in scale invariant scalar-tensor theories of gravity, typically leading to a "dilaton." The fifth force, arising from the dilaton, is severely constrained by astrophysical measurements. We explore the possibility that nature is fundamentally Weyl-scale invariant and argue that, as a consequence, the fifth force effects are dramatically suppressed and such models are viable. We discuss possible obstructions to maintaining scale invariance and how these might be resolved.
Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted manuscript

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Publisher copy:
10.1103/PhysRevD.95.064038

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics; Astrophysics
Oxford college:
Oriel College
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics; Theoretical Physics
Role:
Author
Leverhulme Trust More from this funder
European Research Council More from this funder
United States Department of Energy More from this funder
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review D Journal website
Volume:
95
Issue:
6
Pages:
064038
Publication date:
2017-03-05
Acceptance date:
2017-03-05
DOI:
EISSN:
2470-0029
ISSN:
2470-0010
Pubs id:
pubs:666309
URN:
uri:8b6a190b-d217-4c9d-acff-ad910b7dce76
UUID:
uuid:8b6a190b-d217-4c9d-acff-ad910b7dce76
Local pid:
pubs:666309

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