Charge- and spin-susceptibilities in the
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S. Yunoki; K. Tsutsui; Y. Ohta; S. Maekawa
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Article
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1994
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Elsevier Science
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English
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Effects of long-range Coulomb interaction in one-dimensional electron systems are studied. By using a quantum Monte Carlo method, we obtain that the zero-frequency wave-number dependent charge susceptibility at quarterfilling shows both 2kF and 4kF singularities, kF being the Fermi wave munber, in c