711 citations · 5.5k across the 188 of their papers we have counts for
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Effective Models for the Anderson Impurity and the Kondo Model from Continuous Unitary Transformations
Jörn Krones, Götz S. Uhrig
The method of continuous unitary transformations (CUTs) is applied to the Anderson impurity and the Kondo model aiming at the systematic derivation of convergent effective models.…
From Gapped Excitons to Gapless Triplons in One Dimension
Mohsen Hafez Torbati, Nils A. Drescher, Götz S. Uhrig
Often, exotic phases appear in the phase diagrams between conventional phases. Their elementary excitations are of particular interest. Here, we consider the example of the ionic H…
Dispersive Excitations in the One-Dimensional Ionic Hubbard Model
M. Hafez Torbati, Nils A. Drescher, Götz S. Uhrig
A detailed study of the one-dimensional ionic Hubbard model with interaction is presented. We focus on the band insulating (BI) phase and the spontaneously dimerized insulating…
Finite temperature line-shapes of hard-core bosons in quantum magnets: A diagrammatic approach tested in one dimension
Benedikt Fauseweh, Joachim Stolze, Götz S. Uhrig
The dynamics in quantum magnets can often be described by effective models with bosonic excitations obeying a hard-core constraint. Such models can be systematically derived by ren…