122 citations · 464 across the 13 of their papers we have counts for
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Self-Trapping of Bosons and Fermions in Optical Lattices
Dirk-Sören Lühmann, Kai Bongs, Klaus Sengstock +1
We theoretically investigate the enhanced localization of bosonic atoms by fermionic atoms in three-dimensional optical lattices and find a self-trapping of the bosons for attracti…
Harmonic oscillator model for current- and field-driven magnetic vortices
Benjamin Krueger, Andre Drews, Markus Bolte +3
In experiments the distinction between spin-torque and Oersted-field driven magnetization dynamics is still an open problem. Here, the gyroscopic motion of current- and field-drive…
Localization and delocalization of ultracold bosonic atoms in finite optical lattices
Dirk-Sören Lühmann, Kai Bongs, Klaus Sengstock +1
We study bosonic atoms in small optical lattices by exact diagonalization and observe a striking similarity to the superfluid to Mott insulator transition in macroscopic systems. T…
Exact Solution of Strongly Interacting Quasi-One-Dimensional Spinor Bose Gases
Frank Deuretzbacher, Klaus Fredenhagen, Daniel Becker +3
We present an exact analytical solution of the fundamental system of quasi-one-dimensional spin-1 bosons with infinite delta-repulsion. The eigenfunctions are constructed from the…
Heteronuclear molecules in an optical lattice: Theory and experiment
Frank Deuretzbacher, Kim Plassmeier, Daniela Pfannkuche +5
We study properties of two different atoms at a single optical lattice site at a heteronuclear atomic Feshbach resonance. We calculate the energy spectrum, the efficiency of rf ass…
Evolution from a Bose-Einstein condensate to a Tonks-Girardeau gas: An exact diagonalization study
Frank Deuretzbacher, Kai Bongs, Klaus Sengstock +1
We study ground state properties of spinless, quasi one-dimensional bosons which are confined in a harmonic trap and interact via repulsive delta-potentials. We use the exact diago…