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Fluctuation bounds on charge and heat diffusion
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.Comment: 8 pages. v2: minor clarifications, published versio
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