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Titolo:
Dynamical evolution of the scalar condensate in heavy ion collisions - art. no. 054901
Autore:
Csernai, LP; Ellis, PJ; Jeon, S; Kapusta, JI;
Indirizzi:
Univ Bergen, Dept Phys, N-5007 Bergen, Norway Univ Bergen Bergen Norway N-5007 ergen, Dept Phys, N-5007 Bergen, Norway KFKI, Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary KFKI Budapest Hungary H-1525 ticle & Nucl Phys, H-1525 Budapest, Hungary Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA Univ Minnesota Minneapolis MN USA 55455 Astron, Minneapolis, MN 55455 USA Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 ucl Sci, Berkeley, CA 94720 USA CERN, Div TH, CH-1211 Geneva 23, Switzerland CERN Geneva Switzerland 23CERN, Div TH, CH-1211 Geneva 23, Switzerland
Titolo Testata:
PHYSICAL REVIEW C-NUCLEAR PHYSICS
fascicolo: 5, volume: 6105, anno: 2000,
pagine: 4901 -
SICI:
0556-2813(200005)6105:5<4901:DEOTSC>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
DISORIENTED CHIRAL CONDENSATE; FINITE-TEMPERATURE; PHASE-TRANSITION; FIELD-THEORY; DISSIPATION; FLUCTUATIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Csernai, LP Univ Bergen, Dept Phys, N-5007 Bergen, Norway Univ Bergen Bergen Norway N-5007 Phys, N-5007 Bergen, Norway
Citazione:
L.P. Csernai et al., "Dynamical evolution of the scalar condensate in heavy ion collisions - art. no. 054901", PHYS REV C, 6105(5), 2000, pp. 4901

Abstract

We derive the effective coarse-grained field equation for the scalar condensate of the linens 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 thecondensate. 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 far returning the scaler condensate to thermal equilibrium is of order 2 fm/c.

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Documento generato il 28/11/20 alle ore 03:30:34