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Realization of an Excited, Strongly Correlated Quantum Gas Phase
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Journal Article
Realization of an Excited, Strongly Correlated Quantum Gas Phase
2009
Overview
Ultracold atomic physics offers myriad possibilities to study strongly correlated many-body systems in lower dimensions. Typically, only ground-state phases are accessible. Using a tunable quantum gas of bosonic cesium atoms, we realized and controlled in one-dimensional geometry a highly excited quantum phase that is stabilized in the presence of attractive interactions by maintaining and strengthening quantum correlations across a confinement-induced resonance. We diagnosed the crossover from repulsive to attractive interactions in terms of the stiffness and energy of the system. Our results open up the experimental study of metastable, excited, many-body phases with strong correlations and their dynamical properties.
Publisher
American Association for the Advancement of Science,The American Association for the Advancement of Science
Subject
