Compacton existence and spin-orbit density dependence in Bose-Einstein condensates

Abdullaev, Fatkhulla and Abdul Hadi, Muhammad Salihi and Umarov, Bakhram A. and Abdul Taib, Lukhman and Salerno, Mario (2023) Compacton existence and spin-orbit density dependence in Bose-Einstein condensates. Physical Review E, 107 (4). pp. 1-13. ISSN 2470-0045 E-ISSN 2470-0053

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Abstract

We demonstrate the existence of compactons matter waves in binary mixtures of Bose-Einstein condensates (BEC) trapped in deep optical lattices (OL) subjected to equal contributions of intraspecies Rashba and Dresselhaus spin-orbit coupling (SOC) under periodic time modulations of the intraspecies scattering length. We show that these modulations lead to a rescaling of the SOC parameters that involves the density imbalance of the two components. This gives rise to density dependent SOC parameters that strongly influence the existence and the stability of compacton matter waves. The stability of SOC-compactons is investigated both by linear stability analysis and by time integrations of the coupled Gross-Pitaevskii equations. We find that SOC restricts the parameter ranges for stable stationary SOC-compacton existence but, on the other side, it gives a more stringent signature of their occurrence. In particular, SOC-compactons should appear when the intraspecies interactions and the number of atoms in the two components are perfectly balanced (or close to being balanced for the metastable case). The possibility to use SOC-compactons as a tool for indirect measurements of the number of atoms and/or the intraspecies interactions is also suggested.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Bose-Eistein Condensates, Spin-Orbit Coupling, Strong-Nonlinear Modulation, Compactons
Subjects:	Q Science > QA Mathematics > QA297 Numerical Analysis Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Computational and Theoretical Sciences Kulliyyah of Science
Depositing User:	Dr Muhammad Salihi Abdul Hadi
Date Deposited:	11 Jul 2023 16:22
Last Modified:	11 Jul 2023 16:22
URI:	http://irep.iium.edu.my/id/eprint/105441

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