Shallow Efimov tetramer as inelastic virtual state and resonant enhancement of the atom-trimer relaxation

2011/03/31 by A. Deltuva
Physics and Astronomy · #Atom (system on chip) #Atomic physics #Boson #Bound state #Cold Atom Physics and Bose-Einstein Condensates #Dimer #Inelastic scattering #Molecular physics #Nuclear magnetic resonance #Physics #Quantum many-body systems #Quantum mechanics #Quantum, superfluid, helium dynamics #Relaxation (psychology) #Scattering #Scattering length #Tetramer #Trimer #cond-mat.quant-gas #nucl-th #physics.atom-ph

paper · pdf · doi:10.1209/0295-5075/95/43002

published as Europhys.Lett.95:43002,2011 · updated: 6 pages, 1 table, 6 figures

openalex publication_date 2011/07/26 · arxiv created 2011/08/22 · arxiv updated 2011/08/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

We use exact four-boson scattering equations in the momentum-space framework to study the universal properties of shallow Efimov tetramers and their dependence on the two-boson scattering length. We demonstrate that, in contrast to previous predictions, the shallow tetramer in a particular experimentally unexplored regime is not an unstable bound state but an inelastic virtual state. This leads to a resonant behaviour of the atom-trimer scattering length and thereby to a resonant enhancement of the trimer relaxation in ultracold atom-trimer mixtures.

Citations

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