Phase diagram of the extended Hubbard model in one spatial dimension

Joel W. Cannon, Eduardo Fradkin

Research output: Contribution to journalArticlepeer-review

Abstract

We report results obtained for the phase diagram and critical behavior of the extended Hubbard model in one spatial dimension at half-filling. We show that umklapp scattering is responsible for the tricritical behavior. We calculate the critical exponents at the tricritical point, and along the critical line separating the charge- and spin-density-wave phases. In addition, using Monte Carlo simulations we estimate the position of the tricritical point to occur at approximately U=1.5 and V=3.1 in units of the hopping energy.

Original languageEnglish (US)
Pages (from-to)9435-9443
Number of pages9
JournalPhysical Review B
Volume41
Issue number13
DOIs
StatePublished - 1990

ASJC Scopus subject areas

  • Condensed Matter Physics

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