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arXiv · 1702.01319

Effect of bulk viscosity on interferometry correlations in ultrarelativistic heavy-ion collisions

Piotr Bozek
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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 $\sqrt{s_{NN}}=2760$~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 $R_{out}/R_{side}$, improving the agreement with experimental data.

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BibTeXRIS

Piotr Bozek. 2017-02-04. Effect of bulk viscosity on interferometry correlations in ultrarelativistic heavy-ion collisions. https://doi.org/10.1103/physrevc.95.054909

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