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arXiv · 2602.00674

Josephson Oscillation and Nonlinear Self-Trapping in Quasi-one-dimensional Quantum Liquid

Shivam Singh·Ibrar·Suhail Rashid·Ayan Khan
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Abstract

In this article, we study the two-mode method to analyze the Josephson oscillation for a trapped binary Bose-Einstein condensate while taking into account the beyond mean-field and three body interactions. For this purpose, we use the archetypal model of double well potential and study the Josephson oscillation and self-trapping phases in quasi-one dimension. Additionally, our analysis provides quantitative discussion on the effect of asymmetry and dimension. We further corroborate our findings with Bogoliubov quasi-particle method and notice regions of instabilities and roton like mode.

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Shivam Singh, Ibrar, Suhail Rashid, Ayan Khan. 2026-01-31. Josephson Oscillation and Nonlinear Self-Trapping in Quasi-one-dimensional Quantum Liquid. https://arxiv.org/abs/2602.00674

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