Theory of Bose-Condensed Quantum Crystal
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概要
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Superfluidity and long wavelength excitation in Bose-condensed quantum crystal are discussed. The expression for superfluid density is derived in the framework of lattice model by a projection method. In the case of particles with hard core a modified quantum lattice model is used to derive four sound-like excitations. They are coupled modes of three phonons and a mode related to the breakdown of gauge symmetry.
- 理論物理学刊行会の論文
- 1978-05-25
著者
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UWAHA Makio
Department of Physics, Nagoya University
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Uwaha Makio
Department Of Physics Nagoya University
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Uwaha Makio
Department Of Physics Faculty Of Science Nagoya University
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