Berlin 2018 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 72: Poster Session: Correlated Electrons

TT 72.81: Poster

Mittwoch, 14. März 2018, 15:00–19:00, Poster B

Flavor-twisted Boundary Conditions for calculation of two-particle correlation functions — •Jonas Heverhagen and Maria Daghofer — University of Stuttgart, Institute for Functional Matter and Quantum Technologies, Germany

We generalize the simulation technique flavor-twisted boundary condition (FTBC) combined with exact diagonalization (ED) to gain continuous momentum resolution for two-particle correlation functions. To validate this technique, we compare the results with cluster perturbation theory calculations and identify the strength and weaknesses of both techniques. Hereby, we focus on one-dimensional spin-orbital systems, where first CPT is well established and second results from only ED calculations can easily be compared with FTBC calculations. However, we stress that this technique can also be applied in higher dimensions.