TY - JOUR
T1 - Comment on "Cluster methods for strongly correlated electron systems"
AU - Aryanpour, K.
AU - Maier, Th A.
AU - Jarrell, M.
PY - 2005/1
Y1 - 2005/1
N2 - We comment on the article by Biroli and Kotliar [Phys. Rev. B 65, 155112 (2002)] in which they make a comparison between two cluster techniques, the cellular dynamical mean field theory (CDMFT) and the dynamical cluster approximation (DCA). Based upon an incorrect implementation of the DCA technique in their work, they conclude that the CDMFT is a faster converging technique than the DCA. We present the correct DCA prescription for the particular model Hamiltonian studied in their article and conclude that the DCA, once implemented correctly, is a faster converging technique for the quantities averaged over the cluster.
AB - We comment on the article by Biroli and Kotliar [Phys. Rev. B 65, 155112 (2002)] in which they make a comparison between two cluster techniques, the cellular dynamical mean field theory (CDMFT) and the dynamical cluster approximation (DCA). Based upon an incorrect implementation of the DCA technique in their work, they conclude that the CDMFT is a faster converging technique than the DCA. We present the correct DCA prescription for the particular model Hamiltonian studied in their article and conclude that the DCA, once implemented correctly, is a faster converging technique for the quantities averaged over the cluster.
UR - http://www.scopus.com/inward/record.url?scp=15444380943&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.71.037101
DO - 10.1103/PhysRevB.71.037101
M3 - Review article
AN - SCOPUS:15444380943
SN - 1098-0121
VL - 71
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 3
M1 - 037101
ER -