Temperature variation of the elementary excitation spectrum of two- and three-dimensional liquid 4He

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Korea Univ, Seoul, Korea, Republic of [1 ]
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Phys B Condens Matter | / 4卷 / 415-426期
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Approximation theory - Calculations - Free energy - Lagrange multipliers - Mathematical models - Matrix algebra - Quantum theory - Temperature - Three dimensional - Variational techniques;
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