Radiative corrections from spectator fields cause the inflaton to evolve as an exponential of N_e squared during slow-roll inflation, unlike linear friction approximations, while producing spectator particles whose total number grows exponentially with e-folds.
Kofman, arXiv:astro-ph/9605155 ; L
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abstract
In the inflationary scenario all the matter constituting the universe was created from the process of reheating after inflation. Recent development of the theory of reheating is briefly reviewed. The list of topics includes elementary (perturbative) theory of reheating; quantum field theory in a time-varying background; parametric resonance and explosive particle creation; non-thermal phase transitions from reheating; baryogenesis from reheating; residual oscillations of the scalar field, and other cosmological applications.
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Lecture notes providing a generic introduction to reheating after inflation, covering its theoretical, phenomenological, and observational aspects.
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What spectators do during inflation
Radiative corrections from spectator fields cause the inflaton to evolve as an exponential of N_e squared during slow-roll inflation, unlike linear friction approximations, while producing spectator particles whose total number grows exponentially with e-folds.
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Lectures on Reheating after Inflation
Lecture notes providing a generic introduction to reheating after inflation, covering its theoretical, phenomenological, and observational aspects.