This article is cited in 2 papers

CONDENSED MATTER

Resonance excitation of slow rotons: Linewidth

L. A. Melnikovsky

P. L. Kapitza Institute for Physical Problems, Russian Academy of Sciences

Abstract: An explanation of an anomalously narrow microwave absorption line in superfluid $^4$He has been proposed. It has been shown that the experimentally observed resonance linewidth agrees with the assumption of parametric excitation of a macroscopic coherent roton state.

Received: 02.05.2012
Revised: 04.06.2012

 English version: Journal of Experimental and Theoretical Physics Letters, 2012, 96:2, 98

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