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Fluctuation bounds on charge and heat diffusion
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Fluctuation bounds on charge and heat diffusion
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We study thermal fluctuation corrections to charge and heat conductivity in systems with locally conserved energy and charge, but without locally conserved momentum. Thermal fluctuations may naturally lead to a lower bound on diffusion constants for thermoelectric transport, and need to be taken into account when discussing potential bounds on transport coefficients.
Forward citations
Cited by 2 Pith papers
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Bootstrapping transport in the Drude-Kadanoff-Martin model
Derives lower bound on collective mean free path ℓ = √(τ D) in Drude-Kadanoff-Martin model from Green's function bounds, implying Mott-Ioffe-Regel limit for lattice models.
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Gaussian fluctuating Generally covariant diffusion
The authors extend a generally covariant formalism to include diffusion of conserved charges and comment on the seeming difference between the chemical potential term and the diffusion term.
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