https://doi.org/10.1140/epjp/s13360-023-04554-5
Regular Article
Dynamics of bright soliton under cubic-quartic interactions in quasi-one-dimensional geometry
1
Department of Physics, School of Engineering and Applied Sciences, Bennett University, 201310, Greater Noida, UP, India
2
Department of Physical Sciences, IISER-Kolkata, Mohanpur, West Bengal, India
Received:
29
May
2023
Accepted:
2
October
2023
Published online:
27
October
2023
Recent inspection of liquid-like state in ultra-cold atomic gases due to the stabilization mechanism through the delicate balance between effective mean-field and beyond mean-field (BMF) interactions has motivated us to study the modified/extended Gross–Pitaevskii (eGP) equation which includes the BMF contribution. In this article, we focus on variational analysis of solitonic regime with eGP equation while the soliton is subjected to an obstacle. This reveals different scattering scenarios of the soliton with explicit dependence of the BMF interaction. The results show the existence of tunneling, partial and complete trappings, in different parameter domains. These observations are further corroborated by the fast Fourier transform method. In the later part, we also extend our analysis to trapped systems. The controlled trapping in defect potential and its release can be potentially useful for quantum information storage.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
