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Field Theory Approaches to Relativistic Hydrodynamics

Entropy, 2022
Just as non-relativistic fluids, oftentimes we find relativistic fluids in situations where random fluctuations cannot be ignored, with thermal and turbulent fluctuations being the most relevant examples.
Nahuel Mirón Granese, Alejandra Kandus, Esteban Calzetta   +2 more
doaj   +6 more sources

Effective field theory for non-relativistic hydrodynamics [PDF]

Journal of High Energy Physics, 2020
We write down a Schwinger-Keldysh effective field theory for non-relativistic (Galilean) hydrodynamics. We use the null background construction to covariantly couple Galilean field theories to a set of background sources.
Akash Jain
doaj   +5 more sources

Effective field theory for hydrodynamics without boosts [PDF]

SciPost Physics, 2021
We formulate the Schwinger-Keldysh effective field theory of hydrodynamics without boost symmetry. This includes a spacetime covariant formulation of classical hydrodynamics without boosts with an additional conserved particle/charge current coupled to ...
Jay Armas, Akash Jain
doaj   +7 more sources

Hydrodynamics, anomaly inflow and bosonic effective field theory

Journal of High Energy Physics
Euler hydrodynamics of perfect fluids can be viewed as an effective bosonic field theory. In cases when the underlying microscopic system involves Dirac fermions, the quantum anomalies should be properly described.
Alexander G. Abanov, Andrea Cappelli
doaj   +4 more sources

U(1) quasi-hydrodynamics: Schwinger-Keldysh effective field theory and holography

Journal of High Energy Physics, 2023
We study the quasi-hydrodynamics of a system with a softly broken U(1) global symmetry using effective field theory (EFT) and holographic methods. In the gravity side, we consider a holographic Proca model in the limit of small bulk mass, which is ...
Matteo Baggioli, Yanyan Bu, Vaios Ziogas
doaj   +2 more sources

Effective field theory for hydrodynamics: Thermodynamics, and the derivative expansion

Physical Review D, 2012
We consider the low-energy effective field theory describing the infrared dynamics of non-dissipative fluids. We extend previous work to accommodate conserved charges, and we clarify the matching between field theory variables and thermodynamical ones. We discuss the systematics of the derivative expansion, for which field theory offers a conceptually ...
Sergei Dubovsky, Dam Thanh Son, Lam Hui   +2 more
exaly   +4 more sources

Hydrodynamic effective field theories with discrete rotational symmetry

Journal of High Energy Physics, 2022
We develop a hydrodynamic effective field theory on the Schwinger-Keldysh contour for fluids with charge, energy, and momentum conservation, but only discrete rotational symmetry.
Xiaoyang Huang, Andrew Lucas
doaj   +3 more sources

Generalized hydrodynamics of classical integrable field theory: the sinh-Gordon model

SciPost Physics, 2018
Using generalized hydrodynamics (GHD), we develop the Euler hydrodynamics of classical integrable field theory. Classical field GHD is based on a known formalism for Gibbs ensembles of classical fields, that resembles the thermodynamic Bethe ansatz of
Alvise Bastianello, Benjamin Doyon, Gerard Watts, Takato Yoshimura
doaj   +3 more sources

Hydrodynamics as v s → c

Journal of High Energy Physics
I present the simplest 3+1 dimensional quantum field theory for which the speed of sound can be arbitrarily close to the speed of light. Examining the hydrodynamics, I find cases where the shear viscosity is finite, but the “shear relaxation coefficient”
Guy D. Moore
doaj   +2 more sources

Schwinger-Keldysh effective field theory for stable and causal relativistic hydrodynamics

Journal of High Energy Physics
We construct stable and causal effective field theories (EFTs) for describing statistical fluctuations in relativistic diffusion and relativistic hydrodynamics.
Akash Jain, Pavel Kovtun
doaj   +2 more sources