1 5 Ja n 20 09 Viscosity and dissipation - early stages ∗
نویسنده
چکیده
A very early start up time of the hydrodynamic evolution is needed in order to reproduce observations from relativistic heavy-ion collisions experiments. At such early times the systems is still not locally equilibrated. Another source of deviations from local equilibrium is the viscosity of the fluid. We study these effects at very early times to obtain a dynamical prescription for the transition from an early 2-dimensional expansion to a nearly equilibrated 3-dimensional expansion at latter stages. The role of viscosity at latter stages of the evolution is also illustrated.
منابع مشابه
2 5 Ja n 20 09 Lattice Initial Segments of the Turing Degrees Copyright Fall 2002
Lattice Initial Segments of the Turing Degrees
متن کاملar X iv : 0 81 2 . 25 21 v 2 [ he p - th ] 1 9 Ja n 20 09 UWO - TH - 08 / 15 Beyond η / s = 1 / 4 π
We use a low-energy effective description of gauge theory/string theory duality to argue that the Kovtun-Son-Starinets viscosity bound is generically violated in superconformal gauge theories with non-equal central charges c 6= a. We present new examples (of string theory constructions and of gauge theories) where the bound is violated in a controllable setting. We consider the comparison of re...
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