TY - JOUR

T1 - Ground state properties of the degenerate Hubbard chain

T2 - 1/N-expansion of the Bethe-Ansatz solution for a lattice system

AU - Lee, Kong Ju Bock

AU - Schlottmann, P.

N1 - Funding Information:
We would like to acknowledge the support by US Department of Energy under the grant DE-FGOZ 87ER45333.

PY - 1990/4

Y1 - 1990/4

N2 - The one-dimensional Hubbard model with arbitrary degeneracy N (N = 2S + 1, where S is the spin) is integrable if site-occupations of more than two electrons are excluded. The Bethe-ansatz equations are analyzed in the thermodynamic limit in the absence of external fields. In the large N limit they reduce to those of a hard core Bose gas. The 1/N-correction to the leading order result vanishes identically, so that the first corrections are contributions of the order 1/N2.

AB - The one-dimensional Hubbard model with arbitrary degeneracy N (N = 2S + 1, where S is the spin) is integrable if site-occupations of more than two electrons are excluded. The Bethe-ansatz equations are analyzed in the thermodynamic limit in the absence of external fields. In the large N limit they reduce to those of a hard core Bose gas. The 1/N-correction to the leading order result vanishes identically, so that the first corrections are contributions of the order 1/N2.

UR - http://www.scopus.com/inward/record.url?scp=2542565555&partnerID=8YFLogxK

U2 - 10.1016/0921-4526(90)90223-H

DO - 10.1016/0921-4526(90)90223-H

M3 - Article

AN - SCOPUS:2542565555

SN - 0921-4526

VL - 163

SP - 398

EP - 400

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1-3

ER -