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Titolo:
Kinetic description of vacuum particle production in collisions of ultrarelativistic nuclei
Autore:
Vinnik, DV; Mizerny, VA; Prozorkevich, AV; Smolyansky, SA; Toneev, VD;
Indirizzi:
Joint Inst Nucl Res, Bogolyubov Lab Theoret Phys, Dubna 141980, Moscow Oblast, Russia Joint Inst Nucl Res Dubna Moscow Oblast Russia 141980 scow Oblast, Russia
Titolo Testata:
PHYSICS OF ATOMIC NUCLEI
fascicolo: 4, volume: 64, anno: 2001,
pagine: 775 - 786
SICI:
1063-7788(200104)64:4<775:KDOVPP>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; STRONG ELECTRIC-FIELD; FLUX-TUBE MODEL; PAIR PRODUCTION; BACK-REACTION; CREATION; EQUATION; MATTER; MECHANISM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
59
Recensione:
Indirizzi per estratti:
Indirizzo: Vinnik, DV Saratov State Univ, Saratov 410071, Russia Saratov State Univ Saratov Russia 410071 ratov 410071, Russia
Citazione:
D.V. Vinnik et al., "Kinetic description of vacuum particle production in collisions of ultrarelativistic nuclei", PHYS ATOM N, 64(4), 2001, pp. 775-786

Abstract

The dynamics of partons that emerge as the result of quantum tunneling in a spatially uniform time-dependent field is studied under conditions prevalent in ultrarelativistic heavy-ion collisions. A self-consistent set of coupled equations that consists of the renormalized Maxwell equation and the Vlasov kinetic equation that involves a source and which is derived on a dynamical basis is solved numerically. The time dependence of the distributions of internal fields and currents for bosons and fermions is investigated within this back-reaction mechanism, and their momentum spectra are constructed. Clear evidence that oscillations in the time dependence of parton distributions in phase-space cells are of a stochastic character is obtained, and a significant irregularity in the momentum distribution on large time scales is found. If the influence of the back reaction is disregarded, these effects disappear completely, the oscillations becoming regular. A possiblethermalization scenario for such a quasiparticle plasma is considered in the relaxation-time approximation. A locally equilibrium state is described within the two-component thermodynamics of particles and antiparticles. Thepossibility of introducing temperature under conditions of a strong vacuumpolarization is discussed. (C) 2001 MAIK "Nauka/Interperiodica".

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Documento generato il 28/03/20 alle ore 13:44:18