Rotational properties of superfluid Fermi-Bose mixtures in a tight toroidal trap
arXiv:2004.08142 · doi:10.1103/PhysRevA.102.013323
Abstract
We consider a mixture of a Bose-Einstein condensate, with a paired Fermi superfluid, confined in a ring potential. We start with the ground state of the two clouds, identifying the boundary between the regimes of their phase separation and phase coexistence. We then turn to the rotational response of the system. In the phase-separated regime, we have center of mass excitation. When the two species coexist, the spectrum has a rich structure, consisting of continuous and discontinuous phase transitions. Furthermore, for a reasonably large population imbalance it develops a clear quasi-periodic behaviour, in addition to the one due to the periodic boundary conditions. It is then favourable for the one component to reside in a plane-wave state, with a homogeneous density distribution, and the problem resembles that of a single-component system.
arXiv comment11 pages, 5 figures, final version
References in corpus (40)
- Vortices and Superfluidity in a Strongly Interacting Fermi Gas
- A quasi-pure Bose-Einstein condensate immersed in a Fermi sea
- Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap
- Superflow in a toroidal Bose-Einstein condensate: an atom circuit with a tunable weak link
- Counterflow Superfluidity of Two-Species Ultracold Atoms in a Commensurate Optical Lattice
- Collective Oscillations of an Imbalanced Fermi Gas: Axial Compression Modes and Polaron Effective Mass
- Bose-Einstein condensation in a circular waveguide
- Stationary solutions of the one-dimensional nonlinear Schroedinger equation: I. Case of repulsive nonlinearity
- A Mixture of Bose and Fermi Superfluids
- Quantised supercurrent decay in an annular Bose-Einstein condensate
- Persistent currents in spinor condensates
- Solitary waves in clouds of Bose-Einstein condensed atoms
- Observation of Efimov Resonances in a Mixture with Extreme Mass Imbalance
- Time-averaged adiabatic ring potential for ultracold atoms
- Two-Element Mixture of Bose and Fermi Superfluids
- Observation of two-species vortex lattices in a mixture of mass-imbalance Bose and Fermi superfluids
- Strongly Interacting Isotopic Bose-Fermi Mixture Immersed in a Fermi Sea
- Observation of interspecies Li-Cs Feshbach resonances
- Critical Velocity and Dissipation of an ultracold Bose-Fermi Counterflow
- Hypersonic Bose-Einstein Condensates in Accelerator Rings
- Cold atom confinement in an all-optical dark ring trap
- Potassium ground state scattering parameters and Born-Oppenheimer potentials from molecular spectroscopy
- Ultracold mixtures of atomic Li-6 and Cs-133 with tunable interactions
- Matter-wave interferometers using TAAP rings
- Mixtures of Bose Gases Confined in a Ring Potential
- One-dimensional superfluid Bose-Fermi mixture: mixing, demixing and bright solitons
- Persistent currents in a bosonic mixture in the ring geometry
- Faraday waves in quasi-one-dimensional superfluid Fermi-Bose mixtures
- Coupled Dipole Oscillations of a Mass-Imbalanced Bose and Fermi Superfluid Mixture
- Dark-Bright Solitons in a Superfluid Bose-Fermi Mixture
- Structure and dynamics of a rotating superfluid Bose-Fermi mixture
- Destroying superfluidity by rotating a Fermi gas at unitarity
- Mean-field yrast spectrum of a two-component Bose gas in ring geometry: persistent currents at higher angular momentum
- Solitary waves of Bose-Einstein condensed atoms confined in finite rings
- A number-phase Wigner function
- Collective oscillations of a Bose-Fermi mixture: Effect of unequal mass of Bose and Fermi particles
- Excitation spectrum of a mixture of two Bose gases confined in a ring potential with interaction asymmetry
- Mean-field yrast spectrum and persistent currents in a two-component Bose gas with interaction asymmetry
- Collective dynamics of Fermi-Bose mixtures with an oscillating scattering length
- Persistent currents in a two-component Bose-Einstein condensate confined in a ring potential