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arXiv · 0902.3834

Constraining relativistic viscous hydrodynamical evolution

Mauricio Martinez·Michael Strickland
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Abstract

We show that by requiring positivity of the longitudinal pressure it is possible to constrain the initial conditions one can use in 2nd-order viscous hydrodynamical simulations of ultrarelativistic heavy-ion collisions. We demonstrate this explicitly for 0+1 dimensional viscous hydrodynamics and discuss how the constraint extends to higher dimensions. Additionally, we present an analytic approximation to the solution of 0+1 dimensional 2nd-order viscous hydrodynamical evolution equations appropriate to describe the evolution of matter in an ultrarelativistic heavy-ion collision.

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Mauricio Martinez, Michael Strickland. 2009-04-15. Constraining relativistic viscous hydrodynamical evolution. https://doi.org/10.1103/physrevc.79.044903

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