On the Two-Branch Structure of the Excitation Spectra in Liquid Helium

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概要

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• A theory of excitations in liquid helium is developed from the first principle in connection with the new spectrum discovered by Cowley and Woods. In deriving the results a crude estimate has to be done due to computational difficulties. This paper is, therefore, limited to a qualitative theory. Gross structure of two branches of excitation is obtained; one of them is interpreted as a resonance spectrum of particle-particle scattering, while the other corresponds to the phonon-roton spectrum. Physical background of the existence of the resonance branch is discussed from the point of view of the Bose condensation of liquid helium.

• 理論物理学刊行会の論文
• 1970-11-25

著者

• Iwamoto Fumiaki

  Institute Of Physics College Of Arts And Sciences University Of Tokyo

関連論文

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• Theory of Solid Helium
• Roton-Roton Scattering at Large Total Momentum
• On the Two-Branch Structure of the Excitation Spectra in Liquid Helium
• On the Raman Scattering in Liquid Helium
• Inclusion of Hole Motions in Brueckner Theory
• Application of the 5-Dimensional Spin to the Theory of Superfluid ^3He
• Improved Number Conserving Treatment for a Nuclear Pairing Model
• Perturbation Expansion of the Ground State Energy of Solid Helium

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