Cosmological Reheating and Self-Interacting Final State Bosons

Details Cosmological Reheating and Self-Interacting Final State Bosons Cosmological Reheating and Self-Interacting Final State Bosons

1996-06-28

arxiv.org/abs/hep-ph/9606463v2

Phys.Lett. B395 (1997) 169-177

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages LaTeX, accepted for publication in Physics Letters B, extended discussion of broad-band resonance regime, and referen

Scientific paper

10.1016/S0370-2693(97)00045-2

We consider inflaton decay to final state bosons with self-interactions of moderate strength. We find that such final state self-interactions qualitatively alter the reheat dynamics. In the case of narrow-band resonance decay, where a quantitative analysis is possible, we show that these final state interactions regulate the decay rate. The phenomenon of parametric amplification is then effectively suppressed, and does not drastically enhance the decay rate and reheat temperature. Detailed applications of our results to realistic classes of inflationary models will be considered elsewhere.

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