The paper derives analytic corrections that let fermion-boson vertices and Bethe-Salpeter equations be solved with a small frequency box, improving convergence from 1/ν_max to 1/ν_max^4.
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Improved treatment of fermion-boson vertices and Bethe-Salpeter equations in non-local extensions of dynamical mean field theory
The paper derives analytic corrections that let fermion-boson vertices and Bethe-Salpeter equations be solved with a small frequency box, improving convergence from 1/ν_max to 1/ν_max^4.