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Preheating and Thermalization after Inflation

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arxiv hep-ph/0301249 v1 pith:JH7YBDGD submitted 2003-01-28 hep-ph

classification hep-ph
keywords equilibriumpreheatingallowsappearancecharacterisedcharacteristicclosedevelopment
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abstract

After a short review of inlationary preheating, we discuss the development of equilibrium in the frameworks of massless $\lambda \Phi^4$ model. It is shown that the process is characterised by the appearance of Kolmogorov spectra and the evolution towards thermal equilibrium follows self-similar dynamics. Simplified kinetic theory gives values for all characteristic exponents which are close to what is observed in lattice simulations. This allows estimation of the resulting reheating temperature.

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