Bose-Bose mixtures in a weak-disorder potential: Fluctuations and superfluidity
arXiv:2008.11156 · doi:10.1103/PhysRevA.102.023325
Abstract
We study the properties of a homogeneous dilute Bose-Bose gas in a weak-disorder potential at zero temperature. By using the perturbation theory, we calculate the disorder corrections to the condensate density, the equation of state, the compressibility, and the superfluid density as a function of density, strength of disorder, and miscibility parameter. It is found that the disorder potential may lead to modifying the miscibility-immiscibility condition and a full miscible phase turns out to be impossible in the presence of the disorder. We show that the intriguing interplay of the disorder and intra- and interspecies interactions may strongly influence the localization of each component, the quantum fluctuations, and the compressibility, as well as the superfluidity of the system.
9 pages, 3 figures
References in corpus (17)
- Direct observation of Anderson localization of matter-waves in a controlled disorder
- Quantum liquid droplets in a mixture of Bose-Einstein condensates
- Anderson Localization of Expanding Bose-Einstein Condensates in Random Potentials
- Strongly interacting bosons in a disordered optical lattice
- Quantum fluids of self-assembled chains of polar molecules
- Anderson Localization of Bogolyubov Quasiparticles in Interacting Bose-Einstein Condensates
- Anderson localization of a Bose-Einstein condensate in a 3D random potential
- Bose-Einstein-condensed systems in random potentials
- Smoothing effect and delocalization of interacting Bose-Einstein condensates in random potentials
- Bogoliubov Excitations of Disordered Bose-Einstein Condensates
- Disorder versus the Mermin-Wagner-Hohenberg effect: From classical spin systems to ultracold atomic gases
- Localization of Bogoliubov quasiparticles in interacting Bose gases with correlated disorder
- Disorder-Induced Order in Two-Component Bose-Einstein Condensates
- Bogoliubov Theory of Dipolar Bose Gas in Weak Random Potential
- Dipolar Bose gas in a weak isotropic speckle disorder
- Disordered one-dimensional Bose-Fermi mixtures: The Bose-Fermi glass
- Breathing modes of repulsive polarons in Bose-Bose mixtures