Dynamics of highly unbalanced Bose-Bose mixtures: miscible vs immiscible gases

Abstract

We study the collective modes of the minority component of a highly unbalanced Bose-Bose mixtures. In the miscible case the minority component feels an effective external potential and we derive an analytical expression for the mode frequencies. The latter is independent of the minority component interaction strength. In the immiscible case we find that the ground state can be a two-domain walls soliton. Although the mode frequencies are continuous at the transition, their behaviour is very different with respect to the miscible case. The dynamical behaviour of the solitonic structure and the frequency dependence on the inter- and intra-species interaction is numerically studied using coupled Gross-Pitaevskii equations.

6 pages, 10 figures

References in corpus (7)

• Quantum dynamics of a single, mobile spin impurity
• Persistent currents in spinor condensates
• Ultra-cold Polarized Fermi Gases
• Self-trapping of impurities in Bose-Einstein condensates: Strong attractive and repulsive coupling
• Polaronic properties of an impurity in a Bose-Einstein condensate in reduced dimensions
• Equilibrium solutions of immiscible two-species Bose-Einstein condensates in perturbed harmonic traps
• Quantum gas mixtures in different correlation regimes

Cited by in corpus (17)

• Quench Dynamics and Orthogonality Catastrophe of Bose Polarons
• Few-body Bose gases in low dimensions -- a laboratory for quantum dynamics
• Effective approach to impurity dynamics in one-dimensional trapped Bose gases
• Observation of Spin Superfluidity in a Bose Gas Mixture
• Quenching small quantum gases: Genesis of the orthogonality catastrophe
• Many-body quantum dynamics and induced correlations of Bose polarons
• Spin-Dipole Oscillation and Polarizability of a Binary Bose-Einstein Condensate near the Miscible-Immiscible Phase Transition
• Unstable Avoided Crossing in Coupled Spinor Condensates
• Numerical study of localized impurity in a Bose-Einstein condensate
• Magnetic defects in an unbalanced mixture of two Bose-Einstein condensates
• Spontaneous generation of dark-bright and dark-antidark solitons upon quenching a particle-imbalanced bosonic mixture
• Inducing spin-order with an impurity: phase diagram of the magnetic Bose polaron
• Oscillating Solitons and AC Josephson Effect in Ferromagnetic Bose-Bose Mixtures
• The cross-over from Townes solitons to droplets in a 2D Bose mixture
• Dipole modes of a trapped bosonic mixture: Fate of the sum-rule approach
• Fermionization of a Few-Body Bose System Immersed into a Bose-Einstein Condensate
• Breathing dynamics of the Bose polaron in a species-selective harmonic trap