Single-Particle Momentum Distribution of an Efimov trimer

Details Single-Particle Momentum Distribution of an Efimov trimer Single-Particle Momentum Distribution of an Efimov trimer

2011-03-26

arxiv.org/abs/1103.5157v2

Physical Review A: Atomic, Molecular and Optical Physics 83 (2011) 063614

Physics

Condensed Matter

Quantum Gases

This is a subpart of the (too long to be published) work arXiv:1001.0774. This subpart has 11 pages and 2 figures. Revised ver

Scientific paper

10.1103/PhysRevA.83.063614

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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