The One-Dimensional Hubbard-Model With 1st-Nearest-Neighbor, 2nd-Nearest-Neighbor and 3rd-Nearest-Neighbor Hopping in the Strong-Coupling Limit

Martin Long, C Castleton, CA Hayward

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Using an extension of the Jordan-Wigner transformation, we solve the one-dimensional Hubbard model at U = infinity in the limit of dominant nearest-neighbour hopping combined with infinitesimal hopping over slightly longer ranges. We find several possible phases at zero temperature, including ferromagnetism, paramagnetism (with and without a spin gap), and even long-range antiferromagnetism with a particular limiting procedure. Our solutions are always spin-charge separated, and we give evidence that the charge degrees of freedom are best described by bosonic statistics.
Original languageEnglish
Pages (from-to)481-493
Number of pages13
JournalJournal of Physics: Condensed Matter
Volume6
Issue number2
DOIs
Publication statusPublished - 10 Jan 1994

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