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 -