Charge diffusion constant in hot and dense hadronic matter: A hadro-molecular-dynamics calculation
Department of Physics, Hiroshima University Higashi-Hiroshima 739-8526, Japan
2 Tokuyama Women's College - Tokuyama, 745-8511, Japan
Accepted: 30 January 2001
We evaluate the charge diffusion constant of dense and hot hadronic matter based on the molecular dynamical method by using a hadronic collision generator which describes nuclear collisions at energies GeV/A and satisfies detailed balance at low temperatures ( MeV). For the hot and dense hadronic matter in the temperature range MeV and with baryon number density, nB, from to , the charge diffusion constant D gradually increases from 0.5 fm c to 2 fm c with temperature and is almost independent of baryon number density. Based on the obtained diffusion constant, we make simple discussions on the diffusion of charge fluctuation in ultrarelativistic nuclear collisions.
PACS: 25.75.-q – Relativistic heavy-ion collisions / 33.15.Vb – Correlation times in molecular dynamics / 28.20.Gd – Neutron transport: diffusion and moderation
© EDP Sciences, 2001