Journalartikel

Dissipation and fluctuation at the chiral phase transition


AutorenlisteBiro, TS; Greiner, C

Jahr der Veröffentlichung1997

Seiten3138-3141

ZeitschriftPhysical Review Letters

Bandnummer79

Heftnummer17

ISSN0031-9007

DOI Linkhttps://doi.org/10.1103/PhysRevLett.79.3138

VerlagAmerican Physical Society


Abstract
Utilizing the Langevin equation for the linear a model we investigate the interplay of friction and white noise on the evolution and stability of collective pionic fields in energetic heavy ion collisions. We find that the smaller the volume, the more stable transverse (pionic) fluctuations become on a homogeneous disoriented chiral field background (the average transverse mass [m(t)(2)] increases). other hand the variance of m(t)(2) increases even more, so for a system thermalized in an initial volume of 10 fm(3) about 96% and even in 1000 fm(3) about 60% of the individual trajectories enter into unstable regions (m(t)(2) < 0) for a while during a rapid one-dimensional expansion (tau(0) = 1 fm/c). In contrast the ensemble averaged solution in this case remains stable. This result supports the idea of looking for disoriented chiral condensate (DCC) formation in individual events. [S0031-9007(97)04270-1].



Zitierstile

Harvard-ZitierstilBiro, T. and Greiner, C. (1997) Dissipation and fluctuation at the chiral phase transition, Physical Review Letters, 79(17), pp. 3138-3141. https://doi.org/10.1103/PhysRevLett.79.3138

APA-ZitierstilBiro, T., & Greiner, C. (1997). Dissipation and fluctuation at the chiral phase transition. Physical Review Letters. 79(17), 3138-3141. https://doi.org/10.1103/PhysRevLett.79.3138



Schlagwörter


CONDENSATES FORMHEAVY-ION COLLISIONS


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