Shear-viscosity to entropy-density ratio from giant dipole resonances in hot nuclei
نویسندگان
چکیده
منابع مشابه
Damping Rates of Hot Giant Dipole Resonances
The damping rate of hot giant dipole resonances (GDR) is investigated. Besides Landau damping we consider collisions and density fluctuations as contributions to the damping of GDR. Within the nonequilibrium Green’s function method we derive a non-Markovian kinetic equation. The linearization of the latter one leads to complex dispersion relations. The complex solution provides the centroid ene...
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Starting from relativistic quantum field theories, Kovtun et al. (2005) have quite recently proposed a lower bound η/s ≥ ~/(4πkB), where η is the shear viscosity and s the volume density of entropy for dense liquids. If their proposal can eventually be proved, then this would provide key theoretical underpinning to earlier semiempirical proposals on the relation between a transport coefficient ...
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Article history: Received 16 October 2009 Received in revised form 22 December 2009 Accepted 8 January 2010 Available online 16 January 2010 Editor: W. Haxton The new state of matter produced at Relativistic Heavy Ion Collider reveals a strongly coupled quark– gluon plasma with an extremely small shear viscosity to entropy density ratio η/s. We calculate the η/s of an equilibrated hadron matter...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2011
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.84.034309