Boltzmann equations for preheating
arXiv:1807.11726 · doi:10.1088/1475-7516/2018/09/041
Abstract
We derive quantum Boltzmann equations for preheating by means of the density matrix formalism, which account for both the non-adiabatic particle production and the leading collisional processes between the produced particles. In so doing, we illustrate the pivotal role played by pair correlations in mediating the particle production. In addition, by numerically solving the relevant system of Boltzmann equations, we demonstrate that collisional processes lead to a suppression of the growth of the number density even at the very early stages of preheating.
31 pages, 9 figures, JCAP format. Text and equations changed to match published version
References in corpus (15)
- Leptogenesis
- Reheating in Inflationary Cosmology: Theory and Applications
- Nonperturbative Dynamics Of Reheating After Inflation: A Review
- Inflationary Cosmology
- Dark matter production in the early Universe: beyond the thermal WIMP paradigm
- Flavour Covariant Transport Equations: an Application to Resonant Leptogenesis
- Neutrino-antineutrino correlations in dense anisotropic media
- Neutrino propagation in media: Flavor-, helicity-, and pair correlations
- Particle production and reheating in the inflationary universe
- Coherent quantum Boltzmann equations from cQPA
- Towards a kinetic theory for fermions with quantum coherence
- On finite density effects on cosmic reheating and moduli decay and implications for Dark Matter production
- Quantum kinetic theory for fermions in temporally varying backrounds
- Reheating and preheating in the simplest extension of Starobinsky inflation
- Thermal blocking of preheating