Renormalization of the Vortex Diffusion Constant in Superfluid Films

Authors

Rolfe G. Petschek, Case Western Reserve UniversityFollow

Document Type

Article

Publication Date

4-1-1981

Abstract

We study the dynamics of vortices in superfluid helium films, using a phenomenological Langevin equation to account for diffusive as well as convective motion of vortices. We show that in the long-wavelength limit, dynamic screening effects give rise to a renormalization of the diffusion constant, while the convective parameter remains unchanged. The critical behavior is analyzed with renormalization-group methods. In the limit TTc-, we find a universal cusp singularity for the diffusion constant, reaching a finite value at Tc.

Publication Title

Physical Review B

Rights

© 1981 The American Physical Society.

Recommended Citation

Renormalization of the Vortex Diffusion Constant in Superfluid Films. Petschek R.G., Zippelius A., Physical Review B 23:7, 3483-3493 (1981).