Analytic Solution of the Boltzmann Equation in an Expanding System

D. Bazow, G. S. Denicol, U. Heinz, M. Martinez, J. Noronha

Research output: Contribution to journalArticlepeer-review


For a massless gas with a constant cross section in a homogeneous, isotropically expanding spacetime we reformulate the relativistic Boltzmann equation as a set of nonlinear coupled moment equations. For a particular initial condition this set can be solved exactly, yielding the first analytical solution of the Boltzmann equation for an expanding system. The nonequilibrium behavior of this relativistic gas can be mapped onto that of a homogeneous, static nonrelativistic gas of Maxwell molecules.

Original languageEnglish (US)
Article number022301
JournalPhysical review letters
Issue number2
StatePublished - Jan 15 2016
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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