Cosmological tests of the disformal coupling to radiation

Journal Article · Fri Nov 01 00:00:00 EDT 2013 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2013/11/001· OSTI ID:22369953

Brax, Philippe ^[1]; Burrage, Clare ^[2]; Davis, Anne-Christine ^[3]; Gubitosi, Giulia ^[4]

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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)

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.

• OSTI ID: 22369953
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2013, Issue 11; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COUPLING
DISTANCE
DUALITY
INTERACTIONS
LIMITING VALUES
NONLUMINOUS MATTER
PHOTONS
RELICT RADIATION
SCALAR FIELDS
SCALARS
STANDARD MODEL