Solitonlike Propagation of Zero Sound in Superfluid He3
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We report observations of nonlinear phenomena in the propagation of zero-sound pulses near a collective-mode attenuation peak in He3-B. These include saturation of the sound absorption, amplitude dependence of the group velocity, and pulse breakup. Our data show effects similar to those observed in nonlinear optical systems. We suggest that above a threshold input level, the sound pulse propagates as a soliton. 1981 The American Physical Society.
author list (cited authors)
Polturak, E., deVegvar, P., Zeise, E. K., & Lee, D. M.
complete list of authors
Polturak, E||deVegvar, PGN||Zeise, EK||Lee, DM