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12 papers · 1 filter
Dissociation of Feshbach Molecules into Different Partial Waves
Stephan Dürr, Thomas Volz, Niels Syassen +5
Ultracold molecules can be associated from ultracold atoms by ramping the magnetic field through a Feshbach resonance. A reverse ramp dissociates the molecules. Under suitable cond…
Quantum phases in mixtures of fermionic atoms
C. Ates, K. Ziegler
A mixture of spin-polarized light and heavy fermionic atoms on a finite size 2D optical lattice is considered at various temperatures and values of the coupling between the two ato…
Orbital-selective Mott-Hubbard transition in the two-band Hubbard model
R. Arita, K. Held
Recent advances in the field of quantum Monte Carlo simulations for impurity problems allow --within dynamical mean field theory-- for a more thorough investigation of the two-band…
Movements of molecular motors: Ratchets, random walks and traffic phenomena
Stefan Klumpp, Theo M. Nieuwenhuizen, Reinhard Lipowsky
Processive molecular motors which drive the traffic of organelles in cells move in a directed way along cytoskeletal filaments. On large time scales, they perform motor walks, i.e.…
Noise reduction for flows using nonlinear constraints
Krzysztof Urbanowicz, Janusz A. Holyst
On the basis of a local-projective with nonlinear constraints (LPNC) approach (see K. Urbanowicz, J.A. Holyst, T. Stemler and H. Benner, Acta Phys. Pol B 35 (9), 2175, 2004) we dev…
Asymmetric simple exclusion processes with diffusive bottlenecks
Stefan Klumpp, Reinhard Lipowsky
One-dimensional asymmetric simple exclusion processes (ASEPs) which are coupled to external reservoirs via diffusive transport are studied. These ASEPs consist of active compartmen…