Momentum structure of the self-energy and its parametrization for the two-dimensional Hubbard model

We compute the self-energy for the half-filled Hubbard model on a square lattice using lattice quantum Monte Carlo simulations and the dynamical vertex approximation. The self-energy is strongly momentum-dependent, but it can be parametrized via the noninteracting energy-momentum dispersion [epsilon...

Ausführliche Beschreibung

Bibliographische Detailangaben

Veröffentlicht in:	Physical review. B 2016-05, Vol.93 (19), Article 195134
Hauptverfasser:	Pudleiner, P., Schäfer, T., Rost, D., Li, G., Held, K., Blümer, N.
Format:	Artikel
Sprache:	eng
Schlagworte:	Approximation Computer simulation Condensed matter Dispersion Fluctuation Lattices Mathematical analysis Monte Carlo methods
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!