Variational Description of Mott Insulators

Manuela Capello, Federico Becca, Michele Fabrizio, Sandro Sorella, and Erio Tosatti
Phys. Rev. Lett. 94, 026406 – Published 20 January 2005

Abstract

The Gutzwiller wave function for a strongly correlated model can, if supplemented with a long-range Jastrow factor, provide a proper variational description of Mott insulators, so far unavailable. We demonstrate this concept in the prototypical one-dimensional tt Hubbard model, where at half-filling we reproduce all known phases, namely, the ordinary Mott undimerized insulator with power-law spin correlations at small t/t, the spin-gapped metal above a critical t/t and small U, and the dimerized Mott insulator at large repulsion.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 17 March 2004

DOI:https://doi.org/10.1103/PhysRevLett.94.026406

©2005 American Physical Society

Authors & Affiliations

Manuela Capello1,2, Federico Becca1,2, Michele Fabrizio1,2,3, Sandro Sorella1,2, and Erio Tosatti1,2,3

  • 1International School for Advanced Studies (SISSA), Via Beirut 2-4, I-34014 Trieste, Italy
  • 2INFM-Democritos National Simulation Centre, Trieste, Italy
  • 3International Centre for Theoretical Physics (ICTP), P.O. Box 586, I-34014 Trieste, Italy

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 94, Iss. 2 — 21 January 2005

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×