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Titolo:
ANOMALY INDUCED DOMAIN FORMATION OF DISORIENTED CHIRAL CONDENSATES - ART. NO. 094011
Autore:
ASAKAWA M; MINAKATA H; MULLER B;
Indirizzi:
NAGOYA UNIV,SCH SCI,DEPT PHYS NAGOYA AICHI 4648602 JAPAN UNIV WASHINGTON,INST NUCL THEORY SEATTLE WA 98195 TOKYO METROPOLITAN UNIV,DEPT PHYS TOKYO 1920397 JAPAN DUKE UNIV,DEPT PHYS DURHAM NC 27708
Titolo Testata:
Physical review. D. Particles and fields
fascicolo: 9, volume: 5809, anno: 1998,
pagine: 4011 -
SICI:
0556-2821(1998)5809:9<4011:AIDFOD>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY-ION COLLISIONS; PHASE-TRANSITION; QCD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
38
Recensione:
Indirizzi per estratti:
Citazione:
M. Asakawa et al., "ANOMALY INDUCED DOMAIN FORMATION OF DISORIENTED CHIRAL CONDENSATES - ART. NO. 094011", Physical review. D. Particles and fields, 5809(9), 1998, pp. 4011

Abstract

We discuss the effect of the chiral anomaly as a possible mechanism for triggering the formation of domains of disoriented chiral condensate (DCC) in relativistic heavy ion collisions. The anomalous pi(0) --> 2 gamma coupling and the strong, Lorentz contracted electromagnetic fields of the heavy ions combine to produce the ''anomaly kick'' to the field configuration of the neutral pion field. We implement the effectof the anomaly kick in our numerical simulation of the linear sigma model in a schematic way which preserves its characteristic features: the effect is coherent over a large region of space but is opposite in sign above and below the ion scattering plane. We demonstrate by detailed simulations with longitudinal expansion that the DCC domain formation is dramatically enhanced by the anomaly kick in spite of its smallabsolute magnitude. We examine the behavior of various physical quantities such as pion fields, the axial vector currents, and their correlation functions. Our results also provide useful insight into the mechanism and properties of DCC domain formation, in general. Finally, we discuss some experimental observables which can signal the anomaly induced formation of DCC. [S0556-2821(98)05617-3]

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 10:27:54