Intercomponent correlations in attractive one-dimensional mass-imbalanced few-body mixtures

Daniel Pęcak and Tomasz Sowiński
Phys. Rev. A 99, 043612 – Published 11 April 2019

Abstract

Ground-state properties of a few attractively interacting ultracold atoms of different mass confined in a one-dimensional harmonic trap are studied. The analysis is performed in terms of the noise correlation, which captures the two-particle correlations induced by the mutual interactions. Depending on the mass ratio between the components' atoms, the interparticle correlations change their properties significantly from a strong pairlike correlation to an almost uncorrelated phase. This change is accompanied by a simultaneous change in the structure of the many-body ground state. A crucial role of the quantum statistics is emphasized by comparing properties of the Fermi-Fermi mixture with a corresponding Fermi-Bose system.

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  • Received 28 September 2018

DOI:https://doi.org/10.1103/PhysRevA.99.043612

©2019 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Daniel Pęcak and Tomasz Sowiński

  • Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland

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Issue

Vol. 99, Iss. 4 — April 2019

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