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Gauge field preheating at the end of inflation

Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN: 1550-7998, Vol: 88, Issue: 6
2013
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Here we consider the possibility of preheating the Universe via the parametric amplification of a massless, U(1) Abelian gauge field. We assume that the gauge field is coupled to the inflaton via a dilaton-like coupling, a conformal factor with one free parameter. We present the results of high-resolution three-dimensional simulations of this model and show that this mechanism efficiently preheats the Universe to a radiation-dominated final state. © 2013 American Physical Society.

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