Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-12-18
Nucl.Phys. B683 (2004) 264-276
Physics
High Energy Physics
High Energy Physics - Phenomenology
shortened version (8 pages), modified discussion of hadronization, conclusion unchanged, references added
Scientific paper
10.1016/j.nuclphysb.2004.02.015
We study thermalization of the early Universe when the inflaton can decay into the Standard Model (SM) quarks and gluons, using QCD arguments. We describe the possible formation of the thermal plasma of soft gluons and quarks well before the completion of reheating. Relevant interaction rates of leading order processes and the corresponding thermalization time scale is presented. We discuss hadronization while thermalizing the decay products of the inflaton, when the reheat temperature of the Universe is below the QCD phase transition but above the temperature of the Big Bang nucleosynthesis.
Jaikumar Prashanth
Mazumdar Anupam
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