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Evidence for nonsingular vorticity in the Helsinki experiments on rotating3He-A

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Abstract

A theory for the satellite peak in the NMR spectrum of rotating superfluid3He-A is presented. Absorption at the frequency of the satellite is produced by spin waves localized on vortex lines. The peak frequency and total intensity of the satellite are calculated for both singular and nonsingular vortices; a comparison with the Helsinki NMR data strongly suggests that nonsingular vorticity was actually observed in the experiments.

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Author notes

  1. G. E. Volovik

    Present address: L. D. Landau Institute for Theoretical Physics, Academy of Sciences, Moscow, USSR

Authors and Affiliations

  1. Low Temperature Laboratory, Helsinki University of Technology, Espoo, Finland

    H. K. Seppälä & G. E. Volovik

Authors
  1. H. K. Seppälä
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  2. G. E. Volovik
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Additional information

This work was supported by the Finnish-Soviet Commission for Scientific and Technical Cooperation, the Academy of Finland, and the Academy of Sciences of the USSR.

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Seppälä, H.K., Volovik, G.E. Evidence for nonsingular vorticity in the Helsinki experiments on rotating3He-A. J Low Temp Phys 51, 279–290 (1983). https://doi.org/10.1007/BF00683557

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  • DOI: https://doi.org/10.1007/BF00683557

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