Dynamical Vortices in Superfluid Films

D. P. Arovas; J. A. Freire

doi:10.1103/physrevb.55.1068

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Dynamical Vortices in Superfluid Films

D. P. Arovas·J. A. Freire

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Abstract

The coupling of vortices to phonons in a superfluid is a gauge coupling dictated by topology. The density and current response to a moving vortex are computed and contrasted with the standard backflow picture. Exploiting the analogy to (2+1)-dimensional electrodynamics, we compute the effective vortex mass $M(ω)$ and find it to be logarithmically divergent in the low frequency limit, leading to a super-Ohmic dissipation in response to an oscillating superflow. Numerical integration of the nonlinear Schroedinger equation supports these conclusions. Interaction of vortices and impurities is also discussed.

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D. P. Arovas, J. A. Freire. 1996-09-17. Dynamical Vortices in Superfluid Films. https://doi.org/10.1103/physrevb.55.1068

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