132 citations · 459 across the 14 of their papers we have counts for
14 papers
Adiabatic Quantum Computing for Solving the Weapon-Target Assignment Problem
Veit Stooß, Martin Ulmke, Felix Govaers
Quantum computing promises significant improvements of computation capabilities in various fields such as machine learning and complex optimization problems. Recent technological a…
Curie temperature and quantum phase transitions in the Hubbard model with binary alloy disorder
Krzysztof Byczuk, Martin Ulmke
Magnetic and electric properties of the Hubbard model with binary alloy disorder are studied within the dynamical mean--field theory. A paramagnet--ferromagnet phase transition and…
Ferromagnetism and Metal-Insulator Transition in the Disordered Hubbard Model
Krzysztof Byczuk, Martin Ulmke, Dieter Vollhardt
A detailed study of the paramagnetic to ferromagnetic phase transition in the one-band Hubbard model in the presence of binary alloy disorder is presented. The influence of the dis…
Auxiliary-field Monte Carlo for Quantum Spin and Boson Systems
M. Ulmke, R. T. Scalettar
We describe a new algorithm for the numerical simulation of quantum spin and boson systems. The method is based on the Trotter decomposition in imaginary time and a decoupling by a…
Disorder and Impurities in Hubbard-Antiferromagnets
M. Ulmke, P. J. H. Denteneer, V. Janis +4
We study the influence of disorder and randomly distributed impurities on the properties of correlated antiferromagnets. To this end the Hubbard model with (i) random potentials, (…
Metallic ferromagnetism: Progress in our understanding of an old strong-coupling problem
D. Vollhardt, N. Blümer, K. Held +4
Metallic ferromagnetism is in general an intermediate to strong coupling phenomenon. Since there do not exist systematic analytic methods to investigate such types of problems, the…