4 papers
cond-mat1996
Ferromagnetism in an itinerant electron system: Hubbard model on complete graph
D. F. Wang
In this work, the ground states of the Hubbard model on complete graph are studied, for a finite lattice size and arbitrary on-site energy . We construct explicitly the grou…
cond-mat1996
A remark on off-diagonal long range order
C. A. Piguet, D. F. Wang, C. Gruber
In this work, we study some general property of a strongly correlated electron system defined on a lattice. Assuming that the lattice system exhibits off-diagonal long range order,…
cond-mat1995
One Dimensional Lattice Models of Electrons with 1/r^2 Hopping and Exchange
Ch. Gruber, D. F. Wang
This talk reviews some recent progresses in the studies of low dimensional electronic models of strong correlations.
cond-mat1994
One dimensional exactly solvable models of strongly correlated electrons of hopping and exchange
C. Gruber, D. F. Wang
We review some recent progresses in study of the 1D strongly correlated electron systems of long range hopping and exchange. The systems are completely integrable, with infinite nu…