Roton Parametric Resonance
arXiv:1206.4592 · doi:10.1007/s10909-012-0733-1
Abstract
Parametric excitation of rotons by oscillating electric field exhibits a narrow resonance at the roton minimum frequency. The resonance width is in good agreement with experimental results on the microwave absorption in superfluid helium.
5 pages, 1 figure; References and a figure added