1305.3670 (Sašo Grozdanov et al.)

Viscosity and dissipative hydrodynamics from effective field theory    [PDF]

Sašo Grozdanov, Janos Polonyi

Using the action principle for open systems, inspired by Schwinger's Closed-Time-Path method, we construct the energy-momentum balance equation and the non-conserved first-order dissipative stress-energy tensor with the form predicted by phenomenological hydrodynamics. Hydrodynamical coefficients are shown to be field-dependent quantities, determined by the form of the effective CTP Goldstone action. An example reproducing a conformal field theory at the KSS bound is given.

View original: http://arxiv.org/abs/1305.3670