Method of Collective Description of the Excitations in Liquid Helium
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概要
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The method of collective description presented in a previous paper is applied to obtain the energy spectrum of liquid helium. For lower wave numbers than a cutoff wave number q_0, the energy shift from the Feynman spectrum is obtained by using a renormalization method. For higher wave numbers than q_0, our result resembles that of Bohm and Salt, and the difference between these two results is investigated numerically for a simplified model Hamiltonian. Discussion is made on the pair states of particles which are considered important in relation to the recent experiment of Woods and Cowley.
- 一般社団法人日本物理学会の論文
- 1971-03-25
著者
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NISHIYAMA Toshiyuki
Department of Physics, College of General Education Osaka University
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NISHIYAMA Toshiyuki
Department of Physics and Applied Mathematics Osaka Institute of Technology
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