Gauge Field Preheating at the End of Inflation
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.
Giblin, John T.; Deskins, J. Tate; and Caldwell, Robert R., "Gauge Field Preheating at the End of Inflation" (2013). Physical Review D 88. Faculty Publications. Paper 181.
Physical Review D