Nonperturbative solutions to the Hubbard Model, 1987
Thomas, Lori Ann
1980-1989
Nonperturbative solutions to the Hubbard model are found by using the functional derivative method. A system of closed equations is obtained for the Green's functions of the Hubbard model. Exact expressions for the self-energy are derived which involve only first order functional derivatives. A scheme is proposed for systematically calculating self-energy corrections. We apply the solution to finite rings of two and four lattice sites and compare to the results of numerical calculations on these systems.
text
application/pdf
1987-07-01
thesis
Master of Science (MS)
Atlanta University
School of Arts and Sciences, Physics
Clark Atlanta University
Georgia--Atlanta
http://hdl.handle.net/20.500.12322/cau.td:1987_thomas_lori_a