Back reaction of a long range force on a Friedmann-Robertson-Walker background

Details Back reaction of a long range force on a Friedmann-Robertson-Walker background Back reaction of a long range force on a Friedmann-Robertson-Walker background

2000-06-07

arxiv.org/abs/hep-ph/0006067v1

Phys.Rev. D62 (2000) 103516

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 6 color Postscript figures, LaTeX

Scientific paper

10.1103/PhysRevD.62.103516

It is possible that there may exist long-range forces in addition to gravity. In this paper we construct a simple model for such a force based on exchange of a massless scalar field and analyze its effect on the evolution of a homogeneous Friedmann-Robertson-Walker cosmology. The presence of such an interaction leads to an equation of state characterized by positive pressure and to resonant particle production similar to that observed in preheating scenarios.

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