## 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 language | English (US) |
---|---|

Article number | 054901 |

Pages (from-to) | 549011-549019 |

Number of pages | 9 |

Journal | Physical Review C - Nuclear Physics |

Volume | 61 |

Issue number | 5 |

DOIs | |

State | Published - Jan 1 2000 |