Entropy production, hydrodynamics, and resurgence in the primordial quark-gluon plasma from holography

Microseconds after the Big Bang quarks and gluons formed a strongly coupled nonconformal liquid driven out of equilibrium by the expansion of the Universe. We use holography to determine the nonequilibrium behavior of this liquid in a Friedmann-Lemaître-Robertson-Walker universe and develop an expan...

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Bibliographic Details
Published in:Physical review. D 2016-11, Vol.94 (10), Article 106011
Main Authors: Buchel, Alex, Heller, Michal P., Noronha, Jorge
Format: Article
Language:English
Subjects:
Big bang cosmology
Computational fluid dynamics
Entropy
Fluid flow
Gluons
Holography
Hydrodynamics
Quark-gluon plasma
Quarks
Universe
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Summary:Microseconds after the Big Bang quarks and gluons formed a strongly coupled nonconformal liquid driven out of equilibrium by the expansion of the Universe. We use holography to determine the nonequilibrium behavior of this liquid in a Friedmann-Lemaître-Robertson-Walker universe and develop an expansion for the corresponding entropy production in terms of the derivatives of the cosmological scale factor. We show that the resulting series has zero radius of convergence and we discuss its resurgent properties. Finally, we compute the resummed entropy production rate in a de Sitter universe at late times and show that the leading order approximation given by bulk viscosity effects can strongly overestimate/underestimate the rate depending on the microscopic parameters.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.94.106011