3 papers
cond-mat1996
Analytical Results for a Hole in an Antiferromagnet
Y. M. Li, N. d'Ambrumenil, L. Yu +1
The Green's function for a hole moving in an antiferromagnet is derived analytically in the long-wavelength limit. We find that the infrared divergence is eliminated in two and hig…
cond-mat1994
Bosonization for 2D Interacting Fermion Systems: Non-Fermi Liquid Behavior
Y. Yu, Y. M. Li, N. d'Ambrumenil
Non-Fermi liquid behavior is found for the first time in a two-dimensional (2D) system with non-singular interactions using Haldane's bosonization scheme. The bosonized system is s…
cond-mat1994
A partition functional and thermodynamic properties of the infinite-dimensional Hubbard model
Y. M. Li, N. d'Ambrumenil
An approximate partition functional is derived for the infinite-dimensional Hubbard model. This functional naturally includes the exact solution of the Falicov-Kimball model as a s…