Shear viscosity over entropy density ratio with extended quasi-particles

Abstract

We consider an effective field theory description of beyond-quasi-particle excitations aiming to associate the transport properties of the system with the spectral density of states. Tuning various properties of the many-particle correlations, we investigate how the robust microscopic features are translated into the macroscopic observables like shear viscosity and entropy density. The liquid-gas crossover is analysed using several examples. A thermal constraint on the fluidity measure, the ratio of shear viscosity to entropy density, is discussed.

13 pages, 7 figures, uses revtex4-1; published version

References in corpus (14)

• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• Effect of curvature squared corrections in AdS on the viscosity of the dual gauge theory
• Beyond eta/s = 1/4pi
• Is there a "most perfect fluid" consistent with quantum field theory?
• Bulk and shear viscosities of hot and dense hadron gas
• Nonlocal Scalar Quantum Field Theory from Causal Sets
• Hydrodynamic fluctuations and the minimum shear viscosity of the dilute Fermi gas at unitarity
• A real-time thermal field theoretical analysis of Kubo-type shear viscosity : Numerical understanding with simple examples
• Nambu-Goldstone bosons with fractional-power dispersion relations
• Minimum Shear Viscosity over Entropy Density at Phase Transition? --- A Counterexample
• Ratio of shear viscosity to entropy density in multifragmentation of Au + Au
• Equation of state for distributed mass quark matter
• The mass distribution of quark matter
• Validating the 2PI resummation: the Bloch-Nordsieck example

Cited by in corpus (3)

• Relating $\hat{q}$, $\eta /s$ and $\Delta E$ in an expanding Quark-Gluon Plasma
• Nuclear and Quark Matter at High Temperature
• Quasiparticles in an interacting system of charge and monochromatic field