Universal few-body physics in a harmonic trap

S. Tölle; H. -W. Hammer; B. C. Metsch

doi:10.1016/j.crhy.2010.11.011

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arXiv · 1008.0551

Universal few-body physics in a harmonic trap

S. Tölle·H. -W. Hammer·B. C. Metsch

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Abstract

Few-body systems with resonant short-range interactions display universal properties that do not depend on the details of their structure or their interactions at short distances. In the three-body system, these properties include the existence of a geometric spectrum of three-body Efimov states and a discrete scaling symmetry. Similar universal properties appear in 4-body and possibly higher-body systems as well. We set up an effective theory for few-body systems in a harmonic trap and study the modification of universal physics for 3- and 4-particle systems in external confinement. In particular, we focus on systems where the Efimov effect can occur and investigate the dependence of the 4-body spectrum on the experimental tuning parameters.

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BibTeX RIS

S. Tölle, H. -W. Hammer, B. C. Metsch. 2012-08-15. Universal few-body physics in a harmonic trap. https://doi.org/10.1016/j.crhy.2010.11.011

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