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Title: Cosmological tests of the disformal coupling to radiation

Light scalar fields can naturally couple disformally to Standard Model fields without giving rise to the unacceptably large fifth forces usually associated with light scalars. We show that these scalar fields can still be studied and constrained through their interaction with photons, and focus particularly on changes to the Cosmic Microwave Background spectral distortions and violations of the distance duality relation. We then specialise our constraints to scalars which could play the role of pseudo-Goldstone quintessence.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Institut de Physique Théorique, CEA, IPhT, CNRS, URA 2306, F-91191Gif/Yvette Cedex (France)
  2. School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD (United Kingdom)
  3. Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, Cambridge CB3 0WA (United Kingdom)
  4. Dipartimento di Fisica, Università di Roma ''La Sapienza'' and INFN sez. Roma1, P.le Aldo Moro 2, Roma (Italy)
Publication Date:
OSTI Identifier:
22369953
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2013; Journal Issue: 11; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COUPLING; DISTANCE; DUALITY; INTERACTIONS; LIMITING VALUES; NONLUMINOUS MATTER; PHOTONS; RELICT RADIATION; SCALAR FIELDS; SCALARS; STANDARD MODEL