Josephson Oscillation and Nonlinear Self-Trapping in Quasi-one-dimensional Quantum Liquid
cond-mat.quant-gas
Submitted: 2026-01-31
Updated: 2026-10-21
Comments: 15 Pages, 11 figures; To appear in European Physical Journal Plus
License: http://creativecommons.org/licenses/by/4.0/
The gist: 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
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 the existence of roton-like mode.
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