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Analysis of numerical methods for evaluating the Fock exchange integral
in a plane wave basis
N. A. W. Holzwarth and Xiao Xu,
Phys. Rev. B 84 113102 (4 pgs; brief report) (2011)
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In this brief report, we analyze methods for evaluating the singular
integrals of the Fock exchange interaction
with the help of a simple analytic model. We find that Brillouin zone
sampling can be important even for systems with large unit cells.
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