Dynamical evolution of the scalar condensate in heavy ion collisions

László P. Csernai, Paul J. Ellis, Sangyong Jeon, Joseph I. Kapusta

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We derive the effective coarse-grained field equation for the scalar condensate of the linear sigma model in a simple and straightforward manner using linear response theory. The dissipative coefficient is calculated consistently at tree level on the basis of the physical processes of sigma-meson decay and of thermal sigma mesons and pions knocking sigma mesons out of the condensate. The field equation is solved for hot matter undergoing either one- or three-dimensional expansion and cooling in the aftermath of a high energy nuclear collision. The results show that the time constant for returning the scalar condensate to thermal equilibrium is of order [Formula Presented].

Original languageEnglish (US)
Article number054901
Pages (from-to)549011-549019
Number of pages9
JournalPhysical Review C - Nuclear Physics
Volume61
Issue number5
DOIs
StatePublished - Jan 1 2000

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