Fragmentation of a trapped bosonic mixture

O. E. Alon, L. S. Cederbaum

Research output: Contribution to journalConference articlepeer-review


Fragmentation of bosons and pairs in a trapped imbalanced bosonic mixture is investigated analytically using an exactly solvable model, the generic harmonic-interaction model for mixtures. Closed-form expressions for the eigenvalues and eigenfunctions of the reduced one-particle and two-particle density matrices as a function of all parameters, the masses, numbers of bosons, and the intraspecies and interspecies interactions, are obtained and analyzed. As an application, we consider a system made of N1 = 100 non-interacting species 1 bosons embedded in a bath made of N2 = 106 non-interacting species 2 bosons, and show how fragmentation of the system’s bosons and pairs emerges from the system–bath interaction only. Interestingly, the lighter the bosons comprising the bath are the stronger is the system’s fragmentation. Further applications are briefly discussed.

Original languageEnglish
Article number012014
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 2023
Event30th Annual International Laser Physics Workshop 2022, LPHYS 2022 - Virtual, Online
Duration: 18 Jul 202222 Jul 2022

Bibliographical note

Publisher Copyright:
© 2023 Institute of Physics Publishing. All rights reserved.

ASJC Scopus subject areas

  • General Physics and Astronomy


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