Dirty Hubbard rings: renormalization group and exact diagonalization studies

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dc.creatorMori, Hiroyuki
dc.creatorHamada, Minoru
dc.date1995-09-12
dc.date.accessioned2026-07-07T03:07:53Z
dc.date.available2026-07-07T03:07:53Z
dc.descriptionWe studied mesoscopic Hubbard rings with impurities using the renormalization group (RG) technique and the exact diagonalizations. The exact diagonalization calculations showed that the charge stiffness normalized by the value of clean system has a peak as a function of electron-electron interactions. Previous RG analysis has succeeded to show the enhancement of the stiffness at weak interactions, but does not show the peak behavior. We derived RG equations with $4k_F$ impurity scattering term, which was ignored in the previous studies, and reproduced the overall behavior of the exact diagonalization results.
dc.description5 pages and 4 eps figures
dc.identifierhttps://arxiv.org/abs/cond-mat/9509060
dc.identifierhttp://arxiv.org/abs/cond-mat/9509060
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/27346
dc.subjectCondensed Matter
dc.titleDirty Hubbard rings: renormalization group and exact diagonalization studies
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