Far-from-equilibrium kinetic dynamics of $\lambda {\varphi }^4$ theory in an expanding universe

Nicki Mullins, Gabriel S. Denicol, Jorge Noronha

We investigate the far-from-equilibrium behavior of the Boltzmann equation for a gas of massless scalar field particles with quartic (tree level) self-interactions ($\lambda {\varphi }^4$) in Frie…