Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 31: Quantum gases: Optical lattices I

Q 31.4: Vortrag

Dienstag, 19. März 2013, 15:00–15:15, E 001

Collective modes of interacting bosons in artificial gauge fields — •Ivana Vidanovic, Ulf Bissbort, and Walter Hofstetter — Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt/Main, Germany

Rapid experimental progress in the realization of artificial magnetic fields for cold neutral atoms heads toward the creation and direct observation of exotic quantum states under highly controllable experimental conditions. By combining mean-field and beyond mean-field approaches, we explore the phase diagram of strongly interacting lattice bosons in an artificial magnetic field. We calculate the ground state properties and excitation spectra of various phases. To demonstrate how the physical quantities of our system can be detected in experiments, we perform numerical calculations of the systems non-equilibrium behaviour under realistic perturbations.