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Nongaussianity from Particle Production During Inflation
Nongaussianity Particle Production Inflation
2011/1/11
In a variety of models the motion of the inflaton may trigger the production of some non-inflaton particles during inflation, for example via parametric resonance or a phase transition. Such models ha...
Particle Production of Vector Fields: Scale Invariance is Attractive
Particle Production of Vector Fields Scale Invariance
2010/11/16
In a model of an Abelian vector boson with a Maxwell kinetic term and non-negative mass-squared
it is demonstrated that, under fairly general conditions, a scale-invariant spectrum of perturbations f...
Is the Cosmological Particle Production Homogeneous?
a cosmological scenario particle production the gravitational field
2010/10/18
Using a gauge-invariant formalism we find the density contrast equation in a cosmological scenario with particle production at the expenses of the gravitational field (open system cosmology). First, w...