Test of the Einstein relation in relativistic heavy-ion collisions
Universität Heidelberg - D-69120 Heidelberg, Germany
Accepted: 22 April 1999
Rapidity spectra for protons at SIS, AGS and SPS energies are analyzed within a Relativistic Diffusion Model. At low beam energies of 1.06 A GeV rapidity diffusion coefficients are related to the corresponding relaxation times via a weak-coupling dissipation-fluctuation theorem. At higher energies progressively larger deviations are found, rising to about an order of magnitude at SPS energies.
PACS: 25.75.-q – Relativistic heavy-ion collisions / 24.60.Ky – Fluctuation phenomena / 24.10.Jv – Relativistic models
© EDP Sciences, 1999