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- W3105793614 abstract "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 quantum models, which we extend to generalized Gibbs ensembles (GGEs). In general, GHD must take into account both solitonic and radiative modes of classical fields. We observe that the quasi-particle formulation of GHD remains valid for radiative modes, even though these do not display particle-like properties in their precise dynamics. We point out that because of a UV catastrophe similar to that of black body radiation, radiative modes suffer from divergences that restrict the set of finite-average observables; this set is larger for GGEs with higher conserved charges. We concentrate on the sinh-Gordon model, which only has radiative modes, and study transport in the domain-wall initial problem as well as Euler-scale correlations in GGEs. We confirm a variety of exact GHD predictions, including those coming from hydrodynamic projection theory, by comparing with Metropolis numerical evaluations." @default.
- W3105793614 created "2020-11-23" @default.
- W3105793614 creator A5006099669 @default.
- W3105793614 creator A5035728778 @default.
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- W3105793614 creator A5043282965 @default.
- W3105793614 date "2018-06-30" @default.
- W3105793614 modified "2023-10-11" @default.
- W3105793614 title "Generalized hydrodynamics of classical integrable field theory: the sinh-Gordon model" @default.
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- W3105793614 doi "https://doi.org/10.21468/scipostphys.4.6.045" @default.
- W3105793614 hasPublicationYear "2018" @default.
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