Deterministic confluent equations are derived for three-point correlations of non-Gaussian fluctuations in relativistic stochastic hydrodynamics, including fluctuating velocity, using a covariant formalism in the average local Landau frame.
Evolution of non-gaussian hydrodynamic fluctuations
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Finite current relaxation introduces memory effects that suppress, shift, and reshape non-monotonic cumulant behavior relative to instantaneous equilibrium and Fickian diffusion, most visibly in higher-order cumulants.
In Bjorken flow, non-Gaussian velocity fluctuations evolve with nonlinear coupling between two- and three-point correlators and memory effects, best analyzed in the average Landau frame which coincides with the density frame.
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Non-Gaussian fluctuations in relativistic hydrodynamics: Confluent equations for three-point correlations
Deterministic confluent equations are derived for three-point correlations of non-Gaussian fluctuations in relativistic stochastic hydrodynamics, including fluctuating velocity, using a covariant formalism in the average local Landau frame.
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Cumulant dynamics in finite-memory diffusion
Finite current relaxation introduces memory effects that suppress, shift, and reshape non-monotonic cumulant behavior relative to instantaneous equilibrium and Fickian diffusion, most visibly in higher-order cumulants.
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Non-Gaussian hydrodynamic fluctuations in an expanding relativistic fluid
In Bjorken flow, non-Gaussian velocity fluctuations evolve with nonlinear coupling between two- and three-point correlators and memory effects, best analyzed in the average Landau frame which coincides with the density frame.