Pion chemical potentials in heavy-ion collisions: relativistic quantum molecular dynamic analysis |
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Authors: | Debades Bandyopadhyay Mark Gorenstein Horst Stöcker Walter Greiner Heinz Sorge |
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Affiliation: | 1. Institut für Theoretische Physik, Universit?t, Postfach 111932, W-6000, Frankfurt 11, Germany 3. Theory, T-2, M.S. B243, Los Alamos National Laboratory, P.O. Box 1663, 87545, Los Alamos, NM, USA
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Abstract: | In the framework of relativistic quantum molecular dynamics we analyse pion chemical potentials in the hadron system produced in central heavy-ion collisions at the bombarding energiesE lab/A=(1–2) GeV/nucl. We find that the equilibrium relations hold for chemical potentials of π?, of π0, of π+ and pion energy spectra reach local thermal equilibrium. However, there is no chemical equilibrium. The pion chemical potentials are very large and decrease during the expansion stage. |
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