15 citations · 20 across the 4 of their papers we have counts for
4 papers
DMFT vs Second Order Perturbation Theory for the Trapped 2D Hubbard-Antiferromagnet
Andreas D. Pfister, Eberhard Jakobi, Tobias Gottwald +1
In recent literature on trapped ultracold atomic gases, calculations for 2D-systems are often done within the Dynamical Mean Field Theory (DMFT) approximation. In this paper, we co…
FFLO- and Néel States in finite-size Systems
T. Gottwald, P. G. J. van Dongen
The general structure of the -wave fermionic superfluid pairing order parameter is discussed for systems in thermal equilibrium. We demonstrate that for finite-size systems with…
Antiferromagnetic Order of Repulsively Interacting Fermions on Optical lattices
Tobias Gottwald, Peter van Dongen
The Néel state in fermionic mixtures of two pseudospin species in an optical lattice is analyzed at low temperatures. Experimentally it remains a challenge to demonstrate antiferro…
Ground State Properties of an Asymmetric Hubbard Model for Unbalanced Ultracold Fermionic Quantum Gases
T. Gottwald, P. G. J. van Dongen
In order to describe unbalanced ultracold fermionic quantum gases on optical lattices in a harmonic trap, we investigate an attractive () asymmetric ($t_\uparrow\neq t_\downar…