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Metal-Insulator phase diagram and orbital selectivity in 3-orbital models with rotationally invariant Hund coupling
Philipp Werner, Emanuel Gull, Andrew J. Millis
A three band model containing the essential physics of transition metal oxides with partially filled t_2g shells is solved in the single-site dynamical mean field approximation, us…
Spin freezing transition and non-Fermi-liquid self-energy in a 3-orbital model
Philipp Werner, Emanuel Gull, Matthias Troyer +1
A single-site dynamical mean field study of a three band model with the rotationally invariant interactions appropriate to the t_2g levels of a transition metal oxide reveals a qua…
Strong-Coupling Phases of Frustrated Bosons on a 2-leg Ladder with Ring Exchange
D. N. Sheng, Olexei I. Motrunich, Simon Trebst +2
Developing a theoretical framework to access quantum phases of itinerant bosons or fermions in two dimensions (2D) that exhibit singular structure along surfaces in momentum space…
Local Order and the gapped phase of the Hubbard model: a plaquette dynamical mean field investigation
Emanuel Gull, Philipp Werner, Xin Wang +2
The four-site DCA method of including intersite correlations in the dynamical mean field theory is used to investigate the metal-insulator transition in the Hubbard model. At half…
Continuous-time auxiliary field Monte Carlo for quantum impurity models
Emanuel Gull, Philipp Werner, Olivier Parcollet +1
We present a continuous-time Monte Carlo method for quantum impurity models, which combines a weak-coupling expansion with an auxiliary-field decomposition. The method is considera…