Remarks on Thermal Properties of Rotating Superfluid Helium in a Gravitational Field

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概要

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• Applying the path integral method to the density matrix of a roton hamiltonian in superfluid Helium, in which the Landau expression for the energy spectrum of thermal excitation is included, with a gravitational potential in a rotating system, we obtain a roton Green function to estimate an effective mass of roton and to express the roton number density in the system. Consequently, the calculated results of the specific heat of superfluid Helium at several points of very low temperature show some shifts towards greater values than the conventional theoretical ones to be closer to the experimental values in the vicinity of the Lambda-point temperature.

• 宇宙航空研究開発機構の論文

著者

• ETORI Kanji

  Deportment of Applien Physics, Faculty of Engineering, Miyazaki University

関連論文

• Remarks on Thermal Properties of Rotating Superfluid Helium in a Gravitational Field

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