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Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2011

Single-Particle Momentum Distribution of an Efimov trimer

Yvan Castin
Felix Werner

Résumé

Experimental progress in the study of strongly interacting ultracold atoms has recently allowed the observation of Efimov trimers. We study theoretically a non-conventional observable for these trimer states, that may be accessed experimentally, the momentum distribution n(k) of the constitutive bosonic particles. The large momentum part of the distribution is particularly intriguing: In addition to the expected 1/k^4 tail associated to contact interactions, it exhibits a subleading tail 1/k^5 which is a hall-mark of Efimov physics and leads to a breakdown of a previously proposed expression of the energy as a functional of the momentum distribution.
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Dates et versions

hal-00580078 , version 1 (25-03-2011)
hal-00580078 , version 2 (14-06-2011)

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Yvan Castin, Felix Werner. Single-Particle Momentum Distribution of an Efimov trimer. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2011, 83, pp.063614. ⟨10.1103/PhysRevA.83.063614⟩. ⟨hal-00580078v2⟩
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