Citation
B. Buhrow et Jj. Deisz, A parallel algorithm for conserving approximations of lattice models having both interactions and disorder, INT J MOD B, 15(24-25), 2001, pp. 3270-3278
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
ISSN journal
02179792
→ ACNP
Volume
15
Issue
24-25
Year of publication
2001
Pages
3270 - 3278
Database
ISI
SICI code
0217-9792(20011010)15:24-25<3270:APAFCA>2.0.ZU;2-Z
Abstract
We present a parallel algorithm for numerical calculations for electronic l
attice models with interactions and disorder. In this scheme, diagonal and
off-diagonal disorder are treated exactly per disorder configuration and in
teraction effects are evaluated using conserving approximations based on se
lf-consistent perturbation theory. We demonstrate this method by calculatin
g second-order corrections to the local pairing amplitude and specific heat
for the attractive Hubbard model.