181 citations · 231 across the 6 of their papers we have counts for
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Self-energy functional theory with symmetry breaking for disordered lattice bosons
Dario Hügel, Hugo U. R. Strand, Lode Pollet
We extend the self-energy functional theory (SFT) to the case of interacting lattice bosons in the presence of symmetry breaking and quenched disorder. The self-energy functional w…
Quasi-one-dimensional Hall physics in the Harper-Hofstadter-Mott model
Filip Kozarski, Dario Hügel, Lode Pollet
We study the ground-state phase diagram of the strongly interacting Harper-Hofstadter-Mott model at quarter flux on a quasi-one-dimensional lattice consisting of a single magnetic…
The anisotropic Harper-Hofstadter-Mott model: competition between condensation and magnetic fields
Dario Hügel, Hugo U. R. Strand, Philipp Werner +1
We derive the reciprocal cluster mean-field method to study the strongly-interacting bosonic Harper-Hofstadter-Mott model. The system exhibits a rich phase diagram featuring band i…
Bosonic self-energy functional theory
Dario Hügel, Philipp Werner, Lode Pollet +1
We derive the self-energy functional theory for bosonic lattice systems with broken symmetry by parametrizing the bosonic Baym-Kadanoff effective action in terms of one- and…
Thermodynamics of the Bose-Hubbard model in a Bogoliubov+U theory
Dario Hügel, Lode Pollet
We derive the Bogoliubov+U formalism to study the thermodynamical properties of the Bose-Hubbard model. The framework can be viewed as the zero-frequency limit of bosonic dynamical…
Chiral Ladders and the Edges of Chern Insulators
Dario Hügel, Belén Paredes
The realization and detection of topological phases with ultracold atomic gases is at the frontier of current theoretical and experimental research. Here, we identify cold atoms in…