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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:
 10637788(200104)64:4<775:KDOVPP>2.0.ZU;27
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 HEAVYION COLLISIONS; QUARKGLUON PLASMA; STRONG ELECTRICFIELD; FLUXTUBE MODEL; PAIR PRODUCTION; BACKREACTION; 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. 775786
Abstract
The dynamics of partons that emerge as the result of quantum tunneling in a spatially uniform timedependent field is studied under conditions prevalent in ultrarelativistic heavyion collisions. A selfconsistent 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 backreaction mechanism, and their momentum spectra are constructed. Clear evidence that oscillations in the time dependence of parton distributions in phasespace 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 relaxationtime approximation. A locally equilibrium state is described within the twocomponent 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