Inverse Temperature Expansion for Quantum Lattice Model
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概要
- 論文の詳細を見る
The superfluied-normal transition in liquid helium four is studied theoretically in the language of the Quantum Lattice Model (QLM)which has been proposed by Matsubara and Matsuda. Use is made of a formal analogy of the Hamiltonian between QLM and the anisotropic Heisenberg model (AHM)of ferromagnetism, by applying the right thermodynamical treatment which is different from the case of AHM. The method of a symmetry-breaking field is used in the above analogy by applying a fictionus field H_ζ to AHM by the use of the inverse temperature expansion. The expression for the free energy of QLM is derived up to third order of the inverse temperature. In this calculation the effect of the interatomic force is naturally taken into account. The transition temperature is the higher for the larger parameter of atomic transfer and the smaller pair interaction of atoms.
- 理論物理学刊行会の論文
- 1979-02-25
著者
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Nakano Huzio
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Uwaha Makio
Department Of Physics Faculty Of Science Nagoya University
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Homma Shigeo
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Homma Shigeo
Department Of Applied Physics Nagoya University
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