Friction Coefficient and Berry Phase for a Topological Singularity in a Superfluid
classification
❄️ cond-mat
keywords
frictionsuperfluidcoefficientforcesingularitytopologicalberryclean
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The coexistence of the universal transverse force and the non-universal friction force on a topological singularity in a superfluid is shown here. Based on the BCS type microscopic theory, we explicitly evaluate the quasiparticle contribution to the friction coefficient in a clean fermionic superfluid, showing a new feature of logarithmic divergence.
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