Ground state phases of the half-filled one-dimensional extended Hubbard model
Files
First author draft
Date
2004-06-11
Authors
Sandvik, Anders W.
Balents, L.
Campbell, David K.
Version
First author draft
OA Version
Citation
AW Sandvik, L Balents, DK Campbell. 2004. "Ground state phases of the half-filled one-dimensional extended Hubbard model." PHYSICAL REVIEW LETTERS, Volume 92, Issue 23, pp. ? - ? (4). https://doi.org/10.1103/PhysRevLett.92.236401
Abstract
Using quantum Monte Carlo simulations, results of a strong-coupling expansion, and Luttinger liquid theory, we determine quantitatively the ground state phase diagram of the one-dimensional extended Hubbard model with on-site and nearest-neighbor repulsions U and V. We show that spin frustration stabilizes a bond-ordered (dimerized) state for U≈V/2 up to U/t≈9, where t is the nearest-neighbor hopping. The transition from the dimerized state to the staggered charge-density-wave state for large V/U is continuous for U≲5.5 and first order for higher U.