Effects of quantum fluctuations on macroscopic quantum tunneling and self-trapping of BEC in a double well trap
arXiv:2306.04989 · doi:10.1088/1361-6455/ace66d
Abstract
We study the influence of quantum fluctuations on the macroscopic quantum tunneling and self-trapping of a two-component Bose-Einstein condensate in a double-well trap. Quantum fluctuations are described by the Lee-Huang-Yang term in the modified Gross-Pitaevskii equation. Employing the modified Gross-Pitaevskii equation in scalar approximation, we derive the dimer model using a two-mode approximation. The frequencies of Josephson oscillations and self-trapping conditions under quantum fluctuations are found analytically and proven by numerical simulations of the modified Gross-Pitaevskii equation. The tunneling and localization phenomena are investigated also for the case of the Lee-Huang-Yang fluid loaded in the double-well potential.
14 pages, 9 figures
References in corpus (4)
- Quantum liquid droplets in a mixture of Bose-Einstein condensates
- Symmetry Breaking and Self-trapping of a Dipolar Bose-Einstein Condensate in a Double-well Potential
- Spinor-Induced Instability of Kinks, Holes and Quantum Droplets
- Bosonic impurity in a one-dimensional quantum droplet in the Bose-Bose mixture