Hubbard model with next-nearest-neighbour interaction terms in higher dimensions: New, exactly solvable cases

Péter Gurin, Z. Gulácsi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The exact ground-state wavefunction and energy of an extended Hubbard model are presented containing also next-nearest-neighbour hopping, bondcharge and density interaction terms besides the nearest-neighbour and on-site contributions. Our results are valid at half-filling for a wide range of parameters, on simple hypercubic lattices in arbitrary D > 1 dimensions.

Original languageEnglish
Pages (from-to)827-831
Number of pages5
JournalPhilosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume76
Issue number5
Publication statusPublished - Nov 1997

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Hubbard model
Wave functions
Ground state
ground state
interactions
energy

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy(all)

Cite this

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abstract = "The exact ground-state wavefunction and energy of an extended Hubbard model are presented containing also next-nearest-neighbour hopping, bondcharge and density interaction terms besides the nearest-neighbour and on-site contributions. Our results are valid at half-filling for a wide range of parameters, on simple hypercubic lattices in arbitrary D > 1 dimensions.",
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