Tuesday, August 14, 2012

1208.2660 (Annie Preston et al.)

A Numerical Simulation of Chern-Simons Inflation    [PDF]

Annie Preston, David Garrison, Stephon Alexander
In this work, we present results of numerical simulations of the Chern-Simons Inflation Model proposed by Alexander, Marciano and Spergel. According to this model, inflation begins with a fermion condensate interacting with a gauge field. Crucial to the success of this mechanism is the assumption that the Chern-Simons interaction would drive energy from the initial random spectrum into a narrow band of frequencies at superhorizon scales. In this work we numerically confirm this expectation. These gauge fields, when combined with the Friedmann equations, were broken into a system of hyperbolic equations and numerically simulated with a novel relativistic MHD code. We show that the amplification of horizon sized gauge fields produces the conditions to cause cosmological inflation and that the onset of inflation are robust against certain fine tunings in the initial conditions.
View original: http://arxiv.org/abs/1208.2660

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