Stability of Insulating Phases in the Hubbard Model: a Cluster Expansion

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dc.creatorZiegler, K.
dc.date1993-10-14
dc.date.accessioned2026-07-07T03:06:56Z
dc.date.available2026-07-07T03:06:56Z
dc.descriptionThe stability of the insulating regime of the Hubbard model on a $d$-dimensional lattice, which is characterized by an exponential decay of the Green's functions, is investigated in terms of a cluster expansion. This expansion for the Green's function is organized in terms of connected clustered transfer matrices. An upper bound for the expansion terms is derived for the hopping rate ${\bar t}$ depending on the coupling constant $U$ as ${\bar t}<U/4d$. This implies an upper bound for the decay length of the Green's function.
dc.description18 pages, Plain-TeX, TKM 08/93
dc.identifierhttps://arxiv.org/abs/cond-mat/9310031
dc.identifierhttp://arxiv.org/abs/cond-mat/9310031
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/27001
dc.subjectCondensed Matter
dc.titleStability of Insulating Phases in the Hubbard Model: a Cluster Expansion
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