Renormalization group calculations with
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G. Abramovici
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Article
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2006
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Elsevier Science
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English
β 78 KB
We investigate the phase diagram of a ladder system (two chains, with a Hubbard interaction U and an interband coupling t ? ). It is already known [M. Fabrizio, Phys. Rev. B 48 (1993) 15838] that backward interband scattering Γ°g b Γ plays a particular role in this system. Moreover, some authors (for