Related Experiment Video
Updated: Jun 19, 2026

Dielectric RheoSANS — Simultaneous Interrogation of Impedance, Rheology and Small Angle Neutron Scattering of Complex Fluids
Published on: April 10, 2017
Shear viscosity coefficient and relaxation time of causal dissipative hydrodynamics in QCD
1FIAS, Johann Wolfgang Goethe-Universität, Ruth-Moufang Str. 1, 60438, Frankfurt am Main, Germany.
Abstract:
The shear viscosity coefficient and the corresponding relaxation time for causal dissipative hydrodynamics are calculated based on the microscopic formula proposed in T. Koide and T. Kodama [Phys. Rev. E 78, 051107 (2008)10.1103/PhysRevE.78.051107]. Here, the exact formula is transformed into a more compact form and applied to evaluate these transport coefficients in the chiral perturbation theory and perturbative QCD. It is shown that in the leading order calculation, the causal shear viscosity coefficient eta reduces to that of the ordinary Green-Kubo-Nakano formula, and the relaxation time tau(pi) is related to eta and pressure P by a simple relationship, tau(pi)=eta/P.
More Related Videos
Related Concept Videos
Newtonian Fluid: Problem Solving
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
Viscosity
Viscosity
The SI unit of viscosity is...
Euler's Equations of Motion
Navier–Stokes Equations
Couette Flow

