Phys. Rev. Lett. 101, 023201 (2008) [4 pages]Collisions between Tunable Halo Dimers: Exploring an Elementary Four-Body Process with Identical BosonsReceived 28 March 2008; published 9 July 2008 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. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.023201
DOI:
10.1103/PhysRevLett.101.023201
PACS:
34.50.Cx, 21.45.−v, 33.15.−e, 37.10.Pq
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