A new ripplon branch in He II
Other Condensed Matter
2012-06-21 v2
Abstract
We analyse the dispersion relation of ripplons, on the surface of superfluid helium, using the dispersive hydrodynamics approach and find a new ripplon branch. We obtain analytical equation for the dispersion relation and analytic expressions for the limiting cases. We discuss where ripplons can exist in the energy-wavenumber plane. A numerical solution for the ripplon dispersion curve is obtained in the allowed regions. The new ripplon branch is found at energies just below the instability point.
Cite
@article{arxiv.1003.4709,
title = {A new ripplon branch in He II},
author = {I. V. Tanatarov and I. N. Adamenko and K. E. Nemchenko and A. F. G. Wyatt},
journal= {arXiv preprint arXiv:1003.4709},
year = {2012}
}
Comments
18 pages, 2 figures; replaced with the published version