Quasiparticle Approximations in an Exactly Solvable Model
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概要
- 論文の詳細を見る
The properties of two Hartree-Fock ground states of the well known Lipkin model which are given by the fermion quasiparticle approximation and the boson quasiparticle approximation are studied. Similarity between the two approximations is pointed out. Using the boson quasiparticle approximation, we show that there exists a stable Hartree-Fock ground state of the approximated boson Hamiltonian for any strength of the anharmonic term. The Hartree-Fock energies given by the two approximations are calculated and are compared with the exact ground state energy.
- 理論物理学刊行会の論文
- 1975-07-25
著者
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Takahashi Yoshio
Department Of Physics Tohoku University
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Takahashi Yoshio
Department Of Agricultural Chemistry The University Of Tokyo
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Takahashi Yasuyoshi
Department of Physics, Kumamoto University
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TAKAHASHI Yoshiyuki
Department of Applied Mathematics, Osaka University
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Takahashi Yoshio
Theoretical Physics Institute, Dept. of Physics, Univ. of Alberta
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