2 papers
cond-mat.str-el2001
Conserving approximations vs Two-Particle Self-Consistent Approach
S. Allen, A. -M. S. Tremblay, Y. M. Vilk
The conserving approximation scheme to many-body problems was developed by Kadanoff and Baym using the functional-derivative approach. Another approach for the Hubbard model also s…
cond-mat.str-el2000
Two-particle self-consistent approximation, pseudogap and superconductivity in the attractive Hubbard model
Steve Allen
In this thesis, I present a non-perturbative approach to the single-band attractive Hubard model which is an extension of previous work by Vilk and Tremblay on the repulsive model.…