Persistent currents in a bosonic mixture in the ring geometry

Abstract

In this paper we analyze the possibility of persistent currents of a two-species bosonic mixture in the one-dimensional ring geometry. We extend the arguments used by Bloch to obtain a criterion for the stability of persistent currents for the two-species system. If the mass ratio of the two species is a rational number, persistent currents can be stable at multiples of a certain total angular momenta. We show that the Bloch criterion can also be viewed as a Landau criterion involving the elementary excitations of the system. Our analysis reveals that persistent currents at higher angular momenta are more stable for the two-species system than previously thought.

20 pages and 7 figures

References in corpus (1)

• Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap

Cited by in corpus (24)

• Atomtronic circuits: from many-body physics to quantum technologies
• Optimal Persistent Currents for Interacting Bosons on a Ring with a Gauge Field
• Persistent currents in two-component condensates in a toroidal trap
• Stability of persistent currents in spinor Bose-Einstein condensates
• Perspective on new implementations of atomtronic circuits
• Solvable Model of a Mixture of Bose-Einstein Condensates
• Hydrodynamic modes of partially condensed Bose mixtures
• Immiscible and miscible states in binary condensates in the ring geometry
• A compact experimental machine for studying tunable Bose-Bose superfluid mixtures
• Mean-field yrast spectrum of a two-component Bose gas in ring geometry: persistent currents at higher angular momentum
• Persistent currents in ultracold gases
• Solvable Model of a Generic Trapped Mixture of Interacting Bosons: Reduced Density Matrices and Proof of Bose-Einstein Condensation
• Excitation spectrum of a mixture of two Bose gases confined in a ring potential with interaction asymmetry
• Persistent currents in coherently coupled Bose-Einstein condensates in a ring trap
• Spin-orbit-coupled spin-1 Bose-Einstein condensates in a toroidal trap: even-petal-number necklacelike state and persistent flow
• Solvable model of a generic driven mixture of trapped Bose-Einstein condensates and properties of a many-boson Floquet state at the limit of an infinite number of particles
• Mean-field yrast spectrum and persistent currents in a two-component Bose gas with interaction asymmetry
• Persistent currents in a two-component Bose-Einstein condensate confined in a ring potential
• Metastable spin textures and Nambu-Goldstone modes of a ferromagnetic spin-1 Bose-Einstein condensate confined in a ring trap
• Excitation spectrum of a toroidal spin-1 Bose-Einstein condensate
• Rotational properties of superfluid Fermi-Bose mixtures in a tight toroidal trap
• Coupled-cluster theory for trapped bosonic mixtures
• Mixture of two unequally charged superfluids in a magnetic field
• Fragmentation of identical and distinguishable bosons' pairs and natural geminals of a trapped bosonic mixture