Phys. Rev. B 80, 094516 (2009) [7 pages]Modeling superconducting states of arbitrary pairing symmetry with the fluctuation exchange approximation applied to Hubbard-like modelsReceived 28 April 2009; revised 23 July 2009; published 21 September 2009 We present an algorithm for microscopic modeling of superconducting states of arbitrary pairing symmetry via an implementation of self-consistent perturbation theory, the fluctuation exchange approximation (FLEX), applied to Hubbard-like models. Like the original formulation of FLEX, all ring diagrams that are generated with the bare interaction vertex are included in the generating functional for the self-energy. Thus, this algorithm is suitable for FLEX-based Hubbard model calculations in both the attractive and repulsive cases. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.80.094516
DOI:
10.1103/PhysRevB.80.094516
PACS:
71.10.Fd, 71.10.Li, 74.20.Mn, 74.20.Rp
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