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13 papers · 2 filters
Trap modulation spectroscopy of the Mott-insulator transition in optical lattices
H. Lignier, A. Zenesini, D. Ciampini +5
We introduce a new technique to probe the properties of an interacting cold atomic gas that can be viewed as a dynamical compressibility measurement. We apply this technique to the…
Atomic three-body loss as a dynamical three-body interaction
A. J. Daley, J. M. Taylor, S. Diehl +2
We discuss how large three-body loss of atoms in an optical lattice can give rise to effective hard-core three-body interactions. For bosons, in addition to the usual atomic superf…
Dipole oscillations of confined lattice bosons in one dimension
Simone Montangero, Rosario Fazio, Peter Zoller +1
We study the dynamics of a non-integrable system comprising interacting cold bosons trapped in an optical lattice in one-dimension by means of exact time-dependent numerical DMRG t…
Determination of atomic scattering lengths from measurements of molecular binding energies near Feshbach resonances
A. D. Lange, K. Pilch, A. Prantner +5
We present an analytic model to calculate the atomic scattering length near a Feshbach resonance from data on the molecular binding energy. Our approach considers finite-range squa…
Collective oscillations of a Fermi gas in the unitarity limit: Temperature effects and the role of pair correlations
S. Riedl, E. R. Sanchez Guajardo, C. Kohstall +6
We present detailed measurements of the frequency and damping of three different collective modes in an ultracold trapped Fermi gas of Li atoms with resonantly tuned interactio…
Structure and melting behavior of classical bilayer crystals of dipoles
Xin Lu, Chang-Qin Wu, Andrea Micheli +1
We study the structure and melting of a classical bilayer system of dipoles, in a setup where the dipoles are oriented perpendicular to the planes of the layers and the density of…