Evolutionary intermittency and the QCD critical point

Details Evolutionary intermittency and the QCD critical point Evolutionary intermittency and the QCD critical point

2007-09-04

arxiv.org/abs/0709.0339v2

Phys.Rev.C78:024908,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 8 figures, version published at Phys. Rev. C

Scientific paper

10.1103/PhysRevC.78.024908

We investigate the dynamics of the critical isoscalar condensate, formed during heavy-ion collisions. Our analysis is based on a simplified model where the sigma and the pions are the only degrees of freedom. In field description, both in physical and momentum space, we find that the freeze-out profile presents a structure which reveals clear traces of the critical fluctuations in the sigma-component. In particle representation, using Monte-Carlo simulations and factorial moment analysis, we show that signatures of the initial criticality survive at the detected pions. We propose the distribution of suitably defined intermittency indices, incorporating dynamical effects due to sigma-pion interaction, as the basic observable for the exploration of critical fluctuations in heavy-ion collision experiments.

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