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cond-mat.str-el2010★ 8 cited
Fourier transformation and response functions
O. Gunnarsson, G. Sangiovanni, A. Valli +1
We improve on Fourier transforms (FT) between imaginary time and imaginary frequency used in certain quantum cluster approaches using the Hirsch-Fye method. The asymptoti…
cond-mat.str-el2010★ 55 cited
Dynamical vertex approximation for nanoscopic systems
Angelo Valli, Giorgio Sangiovanni, Olle Gunnarsson +2
With an increasing complexity of nanoscopic systems and the modeling thereof, new theoretical tools are needed for a reliable calculation of complex systems with strong electronic…