Sunday, May 19, 2013

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

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