Dissipative dynamics of vortex lines in superfluid $^{4}$He
Condensed Matter
2009-10-28 v1
Abstract
We propose a Hamiltonian model that describes the interaction between a vortex line in superfluid He and the gas of elementary excitations. An equation of irreversible motion for the density operator of the vortex, regarded as a macroscopic quantum particle with a finite mass, is derived in the frame of Generalized Master Equations. This enables us to cast the effect of the coupling as a drag force with one reactive and one dissipative component, in agreement with the assumption of the phenomenological theories of vortex mutual friction in the two fluid model.
Keywords
Cite
@article{arxiv.cond-mat/9609129,
title = {Dissipative dynamics of vortex lines in superfluid $^{4}$He},
author = {H. M. Cataldo and M. A. Despósito and E. S. Hernández and D. M. Jezek},
journal= {arXiv preprint arXiv:cond-mat/9609129},
year = {2009}
}
Comments
16 pages, no figures, to be published in PRB