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Time-resolved Observation and Control of Superexchange Interactions with Ultracold Atoms in Optical Lattices
S. Trotzky, P. Cheinet, S. Fölling +7
Quantum mechanical superexchange interactions form the basis of quantum magnetism in strongly correlated electronic media. We report on the direct measurement of superexchange inte…
The insulating phases and superfluid-insulator transition of disordered boson chains
Ehud Altman, Yariv Kafri, Anatoli Polkovnikov +1
Using a strong disorder real-space renormalization group (RG), we study the phase diagram of a fully disordered chain of interacting bosons. Since this approach does not suffer fro…
Unzipping Vortices in Type-II Superconductors
Yariv Kafri, David R. Nelson, Anatoli Polkovnikov
The unzipping of vortex lines using magnetic-force microscopy from extended defects is studied theoretically. We study both the unzipping isolated vortex from common defects, such…
Breakdown of the adiabatic limit in low dimensional gapless systems
Anatoli Polkovnikov, Vladimir Gritsev
It is generally believed that a generic system can be reversibly transformed from one state into another by sufficiently slow change of parameters. A standard argument favoring thi…
How to study correlation functions in fluctuating Bose liquids using interference experiments
Vladimir Gritsev, Ehud Altman, Anatoli Polkovnikov +1
Interference experiments with independent condensates provide a powerful tool for analyzing correlation functions. Scaling of the average fringe contrast with the system size is de…
Spectroscopy of Collective Excitations in Interacting Low-Dimensional Many-Body Systems Using Quench Dynamics
Vladimir Gritsev, Eugene Demler, Mikhail Lukin +1
We study the problem of rapid change of the interaction parameter (quench) in many-body low-dimensional system. It is shown that, measuring correlation functions after the quench t…