Theory of Diffusive Fluctuations.

Chen-Lin, Xinyi; Delacrétaz, Luca V; Hartnoll, Sean A

Chen-Lin, Xinyi; Delacrétaz, Luca V; Hartnoll, Sean A.

Afiliación

Chen-Lin X; Department of Physics, Stanford University, Stanford, California 94305-4060, USA.
Delacrétaz LV; Department of Physics, Stanford University, Stanford, California 94305-4060, USA.
Hartnoll SA; Department of Physics, Stanford University, Stanford, California 94305-4060, USA.

Phys Rev Lett ; 122(9): 091602, 2019 Mar 08.

Article en En | MEDLINE | ID: mdl-30932534

RESUMEN

The recently developed effective field theory of fluctuations around thermal equilibrium is used to compute late-time correlation functions of conserved densities. Specializing to systems with a single conservation law, we find that the diffusive pole is shifted in the presence of nonlinear hydrodynamic self-interactions, and that the density-density Green's function acquires a branch point halfway to the diffusive pole, at frequency ω=-(i/2)Dk^{2}. We discuss the relevance of diffusive fluctuations for strongly correlated transport in condensed matter and cold atomic systems.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2019 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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