Mott transition in the two-dimensional Hubbard model

A. Pérez-Navarro, J. Costa-Quintana, F. López-Aguilar

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

We are interested in the description of the Mott-Hubbard transition from a perturbation theory arising from a two-dimensional Hubbard model. The self-energy within the random phase approximation presents some inconsistencies; one of them is that its imaginary part presents more than one zero, which is a violation of the Luttinger theorem. We use a Bogolyubov transformation and within a spin density wave mean field, we recalculate the self-energy in the new ground state, and it is able to describe the Mott-Hubbard transition, satisfying the Luttinger condition. © 1999 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)715-716
JournalPhysica B: Condensed Matter
Volume259-261
DOIs
Publication statusPublished - 1 Jan 1999

Keywords

  • Electronic structure
  • High- T superconductors c
  • Self-energy

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