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physics.comp-ph2024★ 6 cited
Discrete Lehmann representation of three-point functions
Dominik Kiese, Hugo U. R. Strand, Kun Chen +3
We present a generalization of the discrete Lehmann representation (DLR) to three-point correlation and vertex functions in imaginary time and Matsubara frequency. The representati…
physics.comp-ph2024★ 5 cited
cppdlr: Imaginary time calculations using the discrete Lehmann representation
Jason Kaye, Hugo U. R. Strand, Nils Wentzell
We introduce cppdlr, a C++ library implementing the discrete Lehmann representation (DLR) of functions in imaginary time and Matsubara frequency, such as Green's functions and self…