Instability of Boost-invariant hydrodynamics with a QCD inspired bulk viscosity

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dc.creatorTorrieri, Giorgio
dc.creatorMishustin, Igor
dc.date2008-05-04
dc.date2008-07-26
dc.date.accessioned2026-07-07T11:50:32Z
dc.date.available2026-07-07T11:50:32Z
dc.descriptionWe solve the relativistic Navier-Stokes equations with homogeneous boost-invariant boundary conditions, and perform a stability analysis of the solution. We show that, if the bulk viscosity has a peak around $T_c$ as inferred from QCD-based arguments, the background solution "freezes" at $T_c$ to a nearly constant temperature state. This state is however highly unstable with respect to certain inhomogeneous modes. Calculations show that these modes have enough time to blow up and tear the system into droplets. We conjecture that this is how freeze-out occurs in the QGP created in heavy ion collisions, and perhaps similar transitions in the early universe.
dc.descriptionAccepted for publication, Rapid Communication in Physical Review C Discussion extended, derivation and conclusions not changed
dc.identifierhttps://arxiv.org/abs/0805.0442
dc.identifierhttp://arxiv.org/abs/0805.0442
dc.identifierPhys.Rev.C78:021901,2008
dc.identifierdoi:10.1103/PhysRevC.78.021901
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203592
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectNuclear Theory
dc.titleInstability of Boost-invariant hydrodynamics with a QCD inspired bulk viscosity
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