Berlin 2015 – wissenschaftliches Programm
TT 71.15: Poster
Mittwoch, 18. März 2015, 15:00–18:00, Poster B
Temperature dependent properties in the infinite-dimensional Hubbard model with a magnetic field — •Markus Dutschke1, Liviu Chioncel1,2, and Junya Otsuki3 — 1Theoretical Physics III, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, D-86135 Augsburg, Germany — 2Augsburg Center for Innovative Technologies, University of Augsburg, D-86135 Augsburg, Germany — 3Department of Physics, Tohoku University, Sendai 980-8578, Japan
We investigate the temperature and field dependence of the spectral function, the effective mass enhancement and the magnetisation of the infinite-dimensional Hubbard model in a magnetic field. We compare results for different interaction strengths at half-filling, near half-filling and quarter-filling. These are achieved by using dynamical mean-field theory (DMFT) with a continuous-time quantum monte carlo (CT-QMC) impurity solver and are compared with some NRG results.