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On the collective and single-particle excitations in superfluid helium

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Abstract

Based on an analysis of available theoretical and experimental data, it is shown that the collective excitation spectrum is not identical to the single-particle excitation spectrum in superfluid helium 4He. It is shown that collective excitations with phonon-roton spectrum are not directly related to the superfluidity phenomenon.

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Author information

Authors and Affiliations

  1. Joint Institute of High Temperatures, Russian Academy of Sciences, ul. Izhorskaya 13/19, Moscow, 127412, Russia

    V. B. Bobrov & S. A. Trigger

  2. National Research University “Moscow Power Engineering Institute”, ul. Krasnokazarmennaya 14, Moscow, 111250, Russia

    V. B. Bobrov

  3. Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russia

    S. A. Trigger

Authors
  1. V. B. Bobrov
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  2. S. A. Trigger
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Corresponding author

Correspondence to S. A. Trigger.

Additional information

Original Russian Text © V.B. Bobrov, S.A. Trigger, 2014, published in Kratkie Soobshcheniya po Fizike, 2014, Vol. 41, No. 11, pp. 28–37.

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Bobrov, V.B., Trigger, S.A. On the collective and single-particle excitations in superfluid helium. Bull. Lebedev Phys. Inst. 41, 323–328 (2014). https://doi.org/10.3103/S1068335614110049

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  • DOI: https://doi.org/10.3103/S1068335614110049

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