QGP flow fluctuations and the characteristics of higher moments
Abstract
The dynamical development of expanding Quark-gluon Plasma (QGP) flow is studied in a 3+1D fluid dynamical model with a globally symmetric, initial condition. We minimize fluctuations arising from complex dynamical processes at finite impact parameters and from fluctuating random initial conditions to have a conservative fluid dynamical background estimate for the statistical distributions of the thermodynamical parameters. We also avoid a phase transition in the equation of state, and we let the matter supercool during the expansion. Then central Pb+Pb collisions at TeV are studied in an almost perfect fluid dynamical model, with azimuthally symmetric initial state generated in a dynamical flux-tube model. The general development of thermodynamical extensives are also shown for lower energies. We observe considerable deviations from a thermal equilibrium source as a consequence of the fluid dynamical expansion arising from a least fluctuating initial state.
Cite
@article{arxiv.1205.4934,
title = {QGP flow fluctuations and the characteristics of higher moments},
author = {D. J. Wang and L. P. Csernai and D. Strottman and Cs. Anderlik and Y. Cheng and D. M. Zhou and Y. L. Yan and X. Cai and B. H. Sa},
journal= {arXiv preprint arXiv:1205.4934},
year = {2012}
}