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arXiv · 0803.4078

Collisions between tunable halo dimers: exploring an elementary four-body process with identical bosons

F. Ferlaino·S. Knoop·M. Mark·M. Berninger·H. Schöbel·H. -C. Nägerl·R. Grimm
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Abstract

We study inelastic collisions in a pure, trapped sample of Feshbach molecules made of bosonic cesium atoms in the quantum halo regime. We measure the relaxation rate coefficient for decay to lower-lying molecular states and study the dependence on scattering length and temperature. We identify a pronounced loss minimum with varying scattering length along with a further suppression of loss with decreasing temperature. Our observations provide insight into the physics of a few-body quantum system that consists of four identical bosons at large values of the two-body scattering length.

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F. Ferlaino, S. Knoop, M. Mark, M. Berninger, H. Schöbel, H. -C. Nägerl, R. Grimm. 2008-07-22. Collisions between tunable halo dimers: exploring an elementary four-body process with identical bosons. https://doi.org/10.1103/physrevlett.101.023201

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