Effect of bulk viscosity on interferometry correlations in ultrarelativistic heavy-ion collisions
Nuclear Theory
2017-05-24 v1
Abstract
A temperature dependent bulk viscosity coefficient is used in 3+1D hydrodynamic simulations. I study the effect of the increase of bulk viscosity around the critical temperature on the system dynamics in central Pb+Pb collisions at ~GeV. With increasing bulk viscosity the life-time of the system increases slightly. Also the shape of the freeze-out hypersurface changes, the outer layers of the fireball live longer. This effect causes a small reduction of the ratio of two interferometry radii , improving the agreement with experimental data.
Keywords
Cite
@article{arxiv.1702.01319,
title = {Effect of bulk viscosity on interferometry correlations in ultrarelativistic heavy-ion collisions},
author = {Piotr Bozek},
journal= {arXiv preprint arXiv:1702.01319},
year = {2017}
}