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Title: No fifth force in a scale invariant universe

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 scale invariant and argue that, as a consequence, the fifth-force effects are dramatically suppressed and such models are viable. Finally, we discuss possible obstructions to maintaining scale invariance and how these might be resolved.
Authors:
ORCiD logo [1] ;  [2] ;  [1]
  1. Univ. of Oxford, Oxford (United Kingdom)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
Report Number(s):
FERMILAB-PUB-16-665-T; arXiv:1612.03157
Journal ID: ISSN 2470-0010; PRVDAQ; 1502606; TRN: US1700605
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 95; Journal Issue: 6; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1350515
Alternate Identifier(s):
OSTI ID: 1347822

Ferreira, Pedro G., Hill, Christopher T., and Ross, Graham G.. No fifth force in a scale invariant universe. United States: N. p., Web. doi:10.1103/PhysRevD.95.064038.
Ferreira, Pedro G., Hill, Christopher T., & Ross, Graham G.. No fifth force in a scale invariant universe. United States. doi:10.1103/PhysRevD.95.064038.
Ferreira, Pedro G., Hill, Christopher T., and Ross, Graham G.. 2017. "No fifth force in a scale invariant universe". United States. doi:10.1103/PhysRevD.95.064038. https://www.osti.gov/servlets/purl/1350515.
@article{osti_1350515,
title = {No fifth force in a scale invariant universe},
author = {Ferreira, Pedro G. and Hill, Christopher T. and Ross, Graham G.},
abstractNote = {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 scale invariant and argue that, as a consequence, the fifth-force effects are dramatically suppressed and such models are viable. Finally, we discuss possible obstructions to maintaining scale invariance and how these might be resolved.},
doi = {10.1103/PhysRevD.95.064038},
journal = {Physical Review D},
number = 6,
volume = 95,
place = {United States},
year = {2017},
month = {3}
}