Entropy production in high-energy heavy-ion collisions and the correlation of shear viscosity and thermalization time

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dc.creatorDumitru, A.
dc.creatorMolnar, E.
dc.creatorNara, Y.
dc.date2007-06-14
dc.date2007-08-10
dc.date.accessioned2026-07-07T11:16:53Z
dc.date.available2026-07-07T11:16:53Z
dc.descriptionWe study entropy production in the early stage of high-energy heavy-ion collisions due to shear viscosity. We employ the second-order theory of Israel-Stewart with two different stress relaxation times, as appropriate for strong coupling or for a Boltzmann gas, respectively, and compare the hydrodynamic evolution. Based on present knowledge of initial particle production, we argue that entropy production is tightly constrained. We derive new limits on the shear viscosity to entropy density ratio $η/s$, independent from elliptic flow effects, and determine the corresponding Reynolds number. Furthermore, we show that for a given entropy production bound, that the initial time $τ_0$ for hydrodynamics is correlated to the viscosity. The conjectured lower bound for $η/s$ provides a lower limit for $τ_0$.
dc.description10 pages, 10 figures, Text updated, references added, two new figures added, normalization in Fig.1 corrected, final version to be published in PRC
dc.identifierhttps://arxiv.org/abs/0706.2203
dc.identifierhttp://arxiv.org/abs/0706.2203
dc.identifierPhys.Rev.C76:024910,2007
dc.identifierdoi:10.1103/PhysRevC.76.024910
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192823
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.subjectNuclear Experiment
dc.titleEntropy production in high-energy heavy-ion collisions and the correlation of shear viscosity and thermalization time
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