Towards the Mott Transition in One Dimension
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概要
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The spectrum of charge excitations, ImN(q, ω), has been evaluated near the Mott transition in the one-dimensional Hubbard model with a particular value of the Coulomb interaction. The present theory based on a continuum limit describes the smooth change between the Tomonaga-Luttinger liquid state with a q-linear mode and the Mott insulator with a charge gap, by considering Umklapp scattering. The charge susceptibility is seen to diverge proportional to the inverse of the doping rate as the Mott insulator state is approached, in agreement with Bethe-ansatz result. It is shown that the q region where the renormalization group theory and conformal field theory are valid becomes vanishingly small as the transition is approached.
- 社団法人日本物理学会の論文
- 1994-05-15
著者
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FUKUYAMA Hidetoshi
Department of Applied Physics, Tokyo University of Science
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IMADA Masatoshi
Institute for Solid State Physics,University of Tokyo
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Mori Michiyasu
Department Of Physics Faculty Of Science University Of Tokyo
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Fukuyama Hidetoshi
Department Of Applied Physics Faculty Of Science Tokyo University Of Science
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Imada Masatoshi
Institute For Solid State Physics The University Of Tokyo
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Fukuyama Hidetoshi
Department of Applied Physics and Research Institute for Science and Technology, Tokyo University of Science, Shinjuku, Tokyo 162-8601, Japan
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