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Phys. Rev. Lett. 96, 061301 (2006) [4 pages]

Cosmology with Massive Neutrinos Coupled to Dark Energy

A. W. Brookfield,1 C. van de Bruck,2 D. F. Mota,3,4 and D. Tocchini-Valentini4
1Department of Applied Mathematics and Department of Physics, Astro-Particle Theory & Cosmology Group, Hounsfield Road, Hicks Building, University of Sheffield, Sheffield S3 7RH, United Kingdom
2Department of Applied Mathematics, Astro-Particle Theory & Cosmology Group, Hounsfield Road, Hicks Building, University of Sheffield, Sheffield S3 7RH, United Kingdom
3Institute of Theoretical Astrophysics, University of Oslo, 0315 Oslo, Norway
4Astrophysics Department, Oxford University, Keble Road, Oxford OX1 3RH, United Kingdom

Received 18 March 2005; published 13 February 2006

Cosmological consequences of a coupling between massive neutrinos and dark energy are investigated. In such models, the neutrino mass is a function of a scalar field, which plays the role of dark energy. The evolution of the background and cosmological perturbations are discussed. We find that mass-varying neutrinos can leave a significant imprint on the anisotropies in the cosmic microwave background and even lead to a reduction of power on large angular scales.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.96.061301
DOI: 10.1103/PhysRevLett.96.061301
PACS: 95.36.+x; 98.70.Vc; 98.80.Cq
  • 95.36.+x
    Dark energy
  • 98.70.Vc
    Cosmic background radiations
  • 98.80.Cq
    Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)
  • YEAR: 2006
KEYWORDS: cosmology, dark energy, neutrino mass, cosmic ray neutrinos, radiofrequency cosmic radiation

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