Finite-frequency normal and superfluid drag effects in two-component atomic Bose-Einstein condensates
arXiv:2402.11606 · doi:10.1103/PhysRevA.110.013318
Abstract
Two-component systems consisting of mutually interacting particles can demonstrate both intracomponent transport effects and intercomponent entrainment (or drag) effects. In the presence of superfluidity, the intracomponent transport is characterized by dissipative conductivity and superfluid weight in the framework of two-fluid model, and intercomponent entrainment gives rise to normal and nondissipative drag effects. We present unified treatment of all these effects for spatially homogeneous two-component atomic Bose-Einstein condensates based on the Bogoliubov theory, focusing specifically on the drag effects. Calculating finite-frequency intra- and intercomponent conductivities with taking into account quasiparticle damping, we derive and numerically check analytical Drude-like approximations applicable at low frequencies, and Lorentz-like approximations applicable at higher frequencies in vicinity of the resonant energy of spin-to-density Bogoliubov quasiparticle conversion. As possible physical realizations of two-component atomic systems, we consider three-dimensional Bose-Bose mixtures and closely spaced two-layered systems of magnetic dipolar atoms.
arXiv comment14 pages, 7 figures; updated version with several additional discussions and references
References in corpus (37)
- Quantum liquid droplets in a mixture of Bose-Einstein condensates
- Coulomb drag
- Quantum Gases in Optical Boxes
- Coulomb Drag in Normal Metals and Superconductors: Diagrammatic Approach
- Two-Dimensional Weakly Interacting Bose Gas in the Fluctuation Region
- Stability of quasi-two-dimensional Bose-Einstein condensates with dominant dipole-dipole interactions
- Quantum transport in ultracold atoms
- Landau damping in dilute Bose gases
- Effects of Disorder in a Dilute Bose Gas
- Thermodynamics of the superfluid dilute Bose gas with disorder
- Few-body Bose gases in low dimensions -- a laboratory for quantum dynamics
- Bogoliubov Excitations of Disordered Bose-Einstein Condensates
- A two-dimensional quantum gas in a magnetic trap
- Two-dimensional dipolar Bose gas with the roton-maxon excitation spectrum
- Observation of Spin Superfluidity in a Bose Gas Mixture
- Non-dissipative drag of superflow in a two-component Bose gas
- Study of the inter-species interactions in an ultracold dipolar mixture
- Condensate deformation and quantum depletion of Bose-Einstein condensates in external potentials
- Damping in 2D and 3D dilute Bose gases
- Time-of-flight expansion of binary Bose-Einstein condensates at finite temperature
- Thermography of the superfluid transition in a strongly interacting Fermi gas
- Mixing, demixing, and structure formation in a binary dipolar Bose-Einstein condensate
- Effective interactions in a quantum Bose-Bose mixture
- Gauge-invariant microscopic kinetic theory of superconductivity in response to electromagnetic fields
- Two-dimensional quantum droplets in dipolar Bose gases
- Multiple-q current states in a multicomponent superconducting channel
- Magneto-topological transitions in multicomponent superconductors
- Dipolar Drag in Bilayer Harmonically Trapped Gases
- Phase space tomography of cold-atoms dynamics in a weakly corrugated potential
- Linear response study of collisionless spin drag
- Dynamics of a degenerate Cs-Yb mixture with attractive interspecies interactions
- Center motions of nonoverlapping condensates coupled by long-range dipolar interaction in bilayer and multilayer stacks
- Optical spin conductivity in ultracold quantum gases
- Spin conductivity spectrum and spin superfluidity in a binary Bose mixture
- Superfluid drag between excitonic polaritons and superconducting electron gas
- Shaking-induced dynamics of cold atoms in magnetic traps
- Superconductor-polariton non-dissipative drag in optical microcavity