TY - JOUR
T1 - Boltzmann equations for preheating
AU - Emond, WT
AU - Millington, P
AU - Saffin, PM
PY - 2018/9/27
Y1 - 2018/9/27
N2 - 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.
AB - 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.
KW - Inflation
KW - Particle physics - cosmology connection
KW - Physics of the early universe
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=pure_starter&SrcAuth=WosAPI&KeyUT=WOS:000445950200001&DestLinkType=FullRecord&DestApp=WOS
U2 - 10.1088/1475-7516/2018/09/041
DO - 10.1088/1475-7516/2018/09/041
M3 - Article
SN - 1475-7516
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 9
M1 - 041
ER -