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hep-th2023★ 18 cited
Causality and classical dispersion relations
Raphael E. Hoult, Pavel Kovtun
We explore the consequences of relativistic causality and covariant stability for short-wavelength dispersion relations in classical systems. For excitations described by a finite…
hep-th2023
Schwinger-Keldysh effective field theory for stable and causal relativistic hydrodynamics
Akash Jain, Pavel Kovtun
We construct stable and causal effective field theories (EFTs) for describing statistical fluctuations in relativistic diffusion and relativistic hydrodynamics. These EFTs are full…