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• W2887387095 abstract "We present an algorithm to evaluate Matsubara sums for Feynman diagrams comprised of bare Green's functions with single-band dispersions with local U Hubbard interaction vertices. The algorithm provides an exact construction of the analytic result for the frequency integrals of a diagram that can then be evaluated for all parameters $U$, temperature $T$, chemical potential $mu$, external frequencies and internal/external momenta. This method allows for symbolic analytic continuation of results to the real frequency axis, avoiding any ill-posed numerical procedure. When combined with diagrammatic Monte-Carlo, this method can be used to simultaneously evaluate diagrams throughout the entire $T-U-mu$ phase space of Hubbard-like models at minimal computational expense." @default.
• W2887387095 created "2018-08-22" @default.
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• W2887387095 date "2019-01-10" @default.
• W2887387095 modified "2023-09-23" @default.
• W2887387095 title "Algorithmic Matsubara integration for Hubbard-like models" @default.
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• W2887387095 doi "https://doi.org/10.1103/physrevb.99.035120" @default.
• W2887387095 hasPublicationYear "2019" @default.
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