N-body Efimov states of trapped bosons

Abstract

We demonstrate the possibility of existence of meta-stable N-body Efimov states in trapped Bose systems with large scattering length. We calculate spectra of trapped systems of N=3,4,5,6, and 7 bosons using a stochastic variational method with a restricted correlated Gaussian basis. For each system the calculations reveal a series of Efimov states where the energy and the r.m.s. radius exhibit the characteristic exponential dependence upon the state number. We also estimate the contribution of these states to the recombination rate of Bose-Einstein condensates.

References in corpus (1)

• Trapped Bose gases with large positive scattering length

Cited by in corpus (9)

• Observation of an Efimov-like resonance in ultracold atom-dimer scattering
• Comparing and contrasting nuclei and cold atomic gases
• Universality of weakly bound dimers and Efimov trimers close to Li-Cs Feshbach resonances
• The three-body parameter for Efimov states in lithium-6
• Calculating few-body resonances using an oscillator trap
• Efimov spectrum in bosonic systems with increasing number of particles
• Spatial non-locality in confined quantum systems: a liaison with quantum correlations
• Window for Efimov physics for few-body systems with finite-range interactions
• Interacting Bose-condensed gases