On the dangers of partial diagrammatic summations: Benchmarks for the two-dimensional Hubbard model in the weak-coupling regime

We study the two-dimensional Hubbard model in the weak-coupling regime and compare the self-energy obtained from various approximate diagrammatic schemes to the result of diagrammatic Monte Carlo simulations, which sum up all weak-coupling diagrams up to a given order. While dynamical mean-field the...

Ausführliche Beschreibung

Bibliographische Detailangaben

Veröffentlicht in:	arXiv.org 2015-06
Hauptverfasser:	Gukelberger, Jan, Huang, Li, Werner, Philipp
Format:	Artikel
Sprache:	eng
Schlagworte:	Approximation Computer simulation Coupling Dependence Ladder diagrams Mathematical analysis Mean field theory Perturbation theory Physics - Strongly Correlated Electrons Two dimensional models Variation
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!