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cond-mat.str-el2011★ 216 cited

Orthogonal Polynomial Representation of Imaginary-Time Green's Functions

Lewin Boehnke, Hartmut Hafermann, Michel Ferrero +2

We study the expansion of single-particle and two-particle imaginary-time Matsubara Green's functions of quantum impurity models in the basis of Legendre orthogonal polynomials. We…