Efficient Simulation of Resistively Shunted Josephson Junctions
Philipp Werner, Matthias Troyer
DOI 10.1103/PhysRevLett.95.060201 · Physical Review Letters
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Abstract
We present a cluster algorithm for resistively shunted Josephson junctions or similar physical systems, which dramatically improves sampling efficiency, and apply it to the superconductor-to-metal transition in a single junction. Measuring the temperature dependence of the zero bias resistance, we confirm that the critical point does not depend on the strength of the Josephson coupling. However, we find that the correlation exponents vary continuously along the phase boundary, indicating that the Schmid-Bulgadaev transition is a line of fixed points.
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