161 citations · 545 across the 17 of their papers we have counts for
17 papers
Aberration of the Green's function estimator in hybridization expansion continuous-time quantum Monte Carlo
Andreas Hausoel, Markus Wallerberger, Josef Kaufmann +2
We describe an aberration of the resampling estimator for the Green's function customarily used in hybridization expansion continuous-time quantum Monte Carlo. It occurs due to Pau…
Multi-band D-TRILEX approach to materials with strong electronic correlations
Matteo Vandelli, Josef Kaufmann, Mohammed El-Nabulsi +3
We present the multi-band dual triply irreducible local expansion (D-TRILEX) approach to interacting electronic systems and discuss its numerical implementation. This method is des…
Extended regime of coexisting metallic and insulating phases in a two-orbital electronic system
M. Vandelli, J. Kaufmann, V. Harkov +3
We investigate the metal-to-insulator phase transition driven by the density-density electronic interaction in the quarter-filled model on a cubic lattice with two orbitals split b…
Zoology of spin and orbital fluctuations in ultrathin oxide films
Matthias Pickem, Josef Kaufmann, Karsten Held +1
Many metallic transition-metal oxides turn insulating when grown as films that are only a few unit-cells thick. The microscopic origins of these thickness induced metal-to-insulato…
A flat band-induced correlated kagome metal
Linda Ye, Shiang Fang, Min Gu Kang +11
The notion of an electronic flat band refers to a collectively degenerate set of quantum mechanical eigenstates in periodic solids. The vanishing kinetic energy of flat bands relat…
ana_cont: Python package for analytic continuation
Josef Kaufmann, Karsten Held
We present the Python package ana_cont for the analytic continuation of fermionic and bosonic many-body Green's functions by means of either the Pade approximants or the maximum en…