A Long-Range Attractive Interaction of Rotons in Superfluid ^4He
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概要
- 論文の詳細を見る
With the use of the method of the collective description developed by one of the authors (N) for superfluid ^4He, it is shown that a long-range interaction of rotons transmitted by phonons is attractive and yields a resonance state of a roton pair with the binding energy of the order of magnitude 0.12 K which is relevant to the recent experimental results of discussed. Some comments on the relationship to the other theories of the collective description are made in appendices.
- 理論物理学刊行会の論文
- 1974-12-25
著者
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Nishiyama Toshiyuki
Department Of Physics Colleg Of General Education Osaka University
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SAI Shunkichi
Department of Physics, College of General Education Osaka University
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Sai Shunkichi
Department Of Physics College Of General Education Osaka University
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NISHIYAMA Toshiyuki
Department of Physics, Colleg of General Education, Osaka University
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NISHIYAMA Toshiyuki
Department of Physics and Applied Mathematics Osaka Institute of Technology
関連論文
- Inelastic Scattering of Negative Pions on C^ under Distorted Wave Impulse Approximation
- The Concave Nature of the Energy Spectrum of Liquid _4He at Very Low-Wave Numbers
- Pair Theory for Individual Particles in Liquid Helium II
- Momentum Distribution and Ground-State Energy of Liquid ^4He at the Absolute Zero Temperature
- Use of a Coherent-State Representation for a Many-Boson System at High Density
- A Long-Range Attractive Interaction of Rotons in Superfluid ^4He
- Line Width of Rotons in HeII for Wave Numbers between 2A^ and 3A^
- Collective Variable Approach to Many-Boson Systems at High Density
- Momentum Distribution of a Charged Bose Gas at High Density
- On Collective and Internal Motions in a Bose System
- An Algebraic Theory of the Density Matrix, II
- Electrostatic Interactions in an Electron-Ion Gas at High Density
- Momentum Distribution of an Interacting Many-Boson System at High Density
- Condensate Fraction of a Charged Bose Gas at High Density : Condensed Matter and Statistical Physics
- An Algebraic Theory of the Density Matrix, I
- Equivalent Hamiltonian of an Electron Gas at High Density
- State Vectors in the Collective Description
- Theory of Sound Waves and collective Description
- Dispersion Equation and Level Density of Rotons in Liquid He II
- Microscopic Theory of the Energy Spectrum of Liquid Helium
- Method of Collective Description of the Excitations in Liquid Helium
- Momentum Distribution of an Interacting Many-Boson System
- Ground-State Energy of a Many-Boson System : Density and Phase Operator Approach
- Note On Many Fermion Problems
- A Quantum Theory of Boson Assemblies, II : A Classical Approach to Many-Boson Problems