Bose-Einstein Condensation of Efimovian Triples in the Unitary Bose Gas

Year: 2022

Authors: Musolino S., Kurkjian H., Van Regemortel M., Wouters M., Kokkelmans SJJMF., Colussi VE.

Autors Affiliation: Eindhoven Univ Technol, POB 513, NL-5600 MB Eindhoven, Netherlands; Univ Toulouse, CNRS, UPS, Lab Phys Theor, F-31400 Toulouse, France; Univ Maryland, Joint Quantum Inst & Inst Res Elect & Appl Phys, College Pk, MD 20742 USA; Univ Antwerp, TQC, Univ Pl 1, B-2610 Antwerp, Belgium; Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy.

Abstract: In an atomic Bose-Einstein condensate quenched to the unitary regime, we predict the sequential formation of a significant fraction of condensed pairs and triples. At short distances, we demonstrate the two-body and Efimovian character of the condensed pairs and triples, respectively. As the system evolves, their size becomes comparable to the interparticle distance, such that many-body effects become significant. The structure of the condensed triples depends on the size of Efimov states compared with density scales. Unexpectedly, we find universal condensed triples in the limit where these scales are well separated. Our findings provide a new framework for understanding dynamics in the unitary regime as the Bose-Einstein condensation of few-body composites.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 128 (2)      Pages from: 20401-1  to: 20401-8

More Information: We thank Jinglun Li, Denise Ahmed-Braun, Paul Mestrom, Thomas Secker, and Gijs Groeneveld for fruitful discussions. M. V. R. acknowledges support by MURI-AFOSR FA9550-19-1-0399. M. W. acknowledges finan-cial support from the FWO-Vlaanderen under the Project No. G016219N. V. E. C. acknowledges financial support from Provincia Autonoma di Trento and the Italian MIUR under the PRIN2017 projectCEnTraL. S. M. and S. J. J. M. F. K. acknowledge financial support by the Netherlands Organisation for Scientific Research (NWO) under Grant No. 680-47-623.
KeyWords: System; Dynamics; Particle; Order
DOI: 10.1103/PhysRevLett.128.020401

Citations: 23
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