Realization of an Excited, Strongly Correlated Quantum Gas Phase
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 qu...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2009-09, Vol.325 (5945), p.1224-1227 |
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| container_issue | 5945 |
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| container_title | Science (American Association for the Advancement of Science) |
| container_volume | 325 |
| creator | Haller, Elmar Gustavsson, Mattias Mark, Manfred J Danzl, Johann G Hart, Russell Pupillo, Guido Nägerl, Hanns-Christoph |
| description | 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. |
| doi_str_mv | 10.1126/science.1175850 |
| format | Article |
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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. 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| source | American Association for the Advancement of Science; Jstor Complete Legacy |
| subjects | Atomic interactions Atoms Atoms & subatomic particles Bosons Classical and quantum physics: mechanics and fields Crossovers Data lines Energy Exact sciences and technology Gases Magnetic fields Magnetic polarity Particle interactions Particle physics Physics Quantum mechanics Quantum physics Strong nuclear force |
| title | Realization of an Excited, Strongly Correlated Quantum Gas Phase |
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