We consider a cosmological model which has recently been proposed in the literature and where inflation is induced by corrections to the energy density coming from the non-commutativity of spacetime. We show that the very rapid inflationary expansion typical of this model is responsible for a burst of particle production which ends inflation and leads to a radiation-dominated phase. We analytically estimate the energy density of these particles and we confront the results with more precise numerical calculations. We estimate the number of inflationary e-folds before the back-reaction of the radiation energy density overcomes the non-commutative effects and terminates inflation naturally. © 2013 SISSA, Trieste, Italy.

Explosive particle production in non-commutative inflation / Perrier, H.; Durrer, R; ., ; Rinaldi, Massimiliano. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 67 (2013):1(2013). [10.1007/JHEP01(2013)067]

Explosive particle production in non-commutative inflation

Rinaldi, Massimiliano
2013

Abstract

We consider a cosmological model which has recently been proposed in the literature and where inflation is induced by corrections to the energy density coming from the non-commutativity of spacetime. We show that the very rapid inflationary expansion typical of this model is responsible for a burst of particle production which ends inflation and leads to a radiation-dominated phase. We analytically estimate the energy density of these particles and we confront the results with more precise numerical calculations. We estimate the number of inflationary e-folds before the back-reaction of the radiation energy density overcomes the non-commutative effects and terminates inflation naturally. © 2013 SISSA, Trieste, Italy.
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Perrier, H.; Durrer, R; ., ; Rinaldi, Massimiliano
Explosive particle production in non-commutative inflation / Perrier, H.; Durrer, R; ., ; Rinaldi, Massimiliano. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 67 (2013):1(2013). [10.1007/JHEP01(2013)067]
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11572/106007
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