DOI: 10.1103/physrevb.73.035117
View full text
Sign up to set email alerts

Abstract: The calculation of two-and four-particle observables is addressed within the framework of the truncated polynomial expansion method (TPEM). The TPEM replaces the exact diagonalization of the one-electron sector in models for fermions coupled to classical fields such as those used in manganites and diluted magnetic semiconductors. The computational cost of the algorithm is O(N ) -with N the number of lattice sites -for the TPEM which should be contrasted with the computational cost of the diagonalization techn…

Expand abstract