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Pramana

, Volume 33, Issue 6, pp 697–704 | Cite as

Solitons and their resonances on two-dimensional superfluid films

  • J Sreekumar
  • V M Nandakumaran
Condensed Matter Physics

Abstract

The dynamics of saturated two-dimensional superfluid4He films is shown to be governed by the Kadomtsev-Petviashvili equation with negative dispersion. It is established that the phenomena of soliton resonance could be observed in such films. Under the lowest order nonlinearity, such resonance would happen only if two dimensional effects are taken into account. The amplitude and velocity of the resonant soliton are obtained.

Keywords

Solitons superfluid4He soliton resonance Kadomtsev-Petviashvili equation 

PACS Nos

67.40 67.50 05.03 

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Copyright information

© Indian Academy of Sciences 1989

Authors and Affiliations

  • J Sreekumar
    • 1
  • V M Nandakumaran
    • 1
  1. 1.Department of PhysicsCochin University of Science and TechnologyCochinIndia

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