Local equilibrium in heavy-ion collisions: microscopic analysis of a central cell versus infinite matter
REVTEX, 27 pages incl. 10 figures and 3 tables; Phys. Rev. C (in press) Journal-ref: Phys.Rev. C62 (2000) 064906. We study the local equilibrium in the central V = 125 fm3 cell in heavy-ion collisions at energies from 10.7 A GeV (AGS) to 160 A GeV (SPS) calculated in the microscopic transport model. In the present paper the hadron yields and energy spectra in the cell are compared with those of infinite nuclear matter, as calculated within the same model. The agreement between the spectra in the two systems is established for times t >= 10 fm/c in the central cell. The cell results do not deviate noticeably from the infinite matter calculations with rising incident energy, in contrast to the apparent discrepancy with predictions of the statistical model (SM) of an ideal hadron gas. The entropy of this state is found to be very close to the maximum entropy, while hadron abundances and energy spectra differ significantly from those of the SM.
| Author: | Larissa V. Bravina, Eugene E. Zabrodin, Steffen A. Bass, Marcus Bleicher, Mathias Brandstetter, Sven Soff, Horst Stöcker, Walter Greiner |
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| URN: | urn:nbn:de:hebis:30-6752 |
| Document Type: | Preprint |
| Language: | English |
| Date of Publication (online): | 13.04.2005 |
| Year of first Publication: | 2000 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| Source: | ArXiv nucl-th/0011011 |
| HeBIS PPN: | 128748613 |
| Institutes: | Physik |
| Dewey Decimal Classification: | 530 Physik |
| PACS-Classification: | 24.10.Lx Monte Carlo simulations (including hadron and parton cascades and string breaking models) |
| 24.10.Pa Thermal and statistical models | |
| 25.75.-q Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions) | |
| Sammlungen: | Universitätspublikationen |
| Licence (German): | Veröffentlichungsvertrag für Publikationen ohne Print on Demand |





