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Universal thermoelectric transport in nanowires


We describe the thermal and electrical conductivites of quasi-one dimensional
wires across a quantum phase transition between a superconductor and metal
driven by pairbreaking perturbations.  Fluctuation corrections to BCS theory
motivate a field theory for quantum criticality.  In the quantum critical
region we can compute deviations in the Wiedemann-Franz ratio from the Lorenz
number which will act as a sensitive test of the theory.  Time permitting, the
connection of the critical theory to a recently proposed infinite randomness
fixed point will be discussed.