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Phys. Rev. D 65, 103513 (2002) [10 pages]

Cosmology with a long range repulsive force

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Martina Brisudova*
Department of Physics, University of Florida, P.O. Box 118440, Gainesville, Florida 32611

William H. Kinney†
Institute for Strings, Cosmology, and Astroparticle Physics, Columbia University, New York, New York 10027

Richard Woodard‡
Department of Physics, University of Florida, P.O. Box 118440, Gainesville, Florida 32611

Received 24 October 2001; published 9 May 2002

We consider a class of cosmological models in which the universe is filled with a (nonelectric) charge density that repels itself by means of a force carried by a vector boson with a tiny mass. When the vector’s mass depends upon other fields, the repulsive interaction gives rise to an electromagnetic barrier which prevents these fields from driving the mass to zero. This can modify the cosmology dramatically. We present a very simple realization of this idea in which the vector’s mass arises from a scalar field. The electromagnetic barrier prevents this field from rolling down its potential and thereby leads to accelerated expansion.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.65.103513
DOI:
10.1103/PhysRevD.65.103513
PACS:
98.80.Cq, 04.62.+v, 98.80.Hw

*On leave from Physics Institute, SAS, Dúbravská cesta 9, 842 28 Bratislava, Slovakia. Present address: Nuclear Theory Center, Indiana University, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47408. Electronic address: brisuda@phys.ufl.edu

†Electronic address: kinney@physics.columbia.edu

‡Electronic address: woodard@phys.ufl.edu

 
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