Interspecies singlet pairing in a mixture of two spin-1 Bose condensates

Abstract

We study the ground state properties of a mixture formed by two spin-1 condensates in the absence of an external magnetic field. As the collisional symmetry between interspecies bosonic atoms is broken, the interspecies coupling interaction ($\beta$) and interspecies singlet pairing interaction ($\gamma$) arise. The ground state can be calculated using the angular momentum theory analytically for $\gamma =0$. The full quantum approach of exact diagonalization is adopted numerically to consider the more general case as $\gamma \ne 0$. We illustrate the competition between the two interspecies interactions and find that as singlet pairing interaction dominates (or the total spin vanishes), there are still different types of singlet formations which are well determined by $\beta$.

arXiv comment7 pages, 4 figures

References in corpus (26)

• Spinor Bose Condensates in Optical Traps
• Spin domains in ground state spinor Bose-Einstein condensates
• Optical Confinement of a Bose-Einstein Condensate
• Bose-Einstein condensation with internal degrees of freedom in alkali atom gases
• Quantum spins mixing in spinor Bose-Einstein condensates
• Tuning the scattering length with an optically induced Feshbach resonance
• Phase separation of Bose-Einstein condensates
• Influence of nearly resonant light on the scattering length in low-temperature atomic gases
• Double species condensate with tunable interspecies interactions
• Observation of spinor dynamics in optically trapped 87Rb Bose-Einstein Condensates
• A two atomic species superfluid
• Observation of metastable states in spinor Bose-Einstein condensates
• Fragmentation of Bose-Einstein Condensates
• Fragmented and Single Condensate Ground States of Spin-1 Bose Gas
• Exact Eigenstates and Magnetic Response of Spin-1 and Spin-2 Vectorial Bose-Einstein Condensates
• The Phase Diagrams of F=2 Spinor Bose Condensates
• Coherent spin mixing dynamics in a spin-1 atomic condensate
• On the single mode approximation in spinor-1 atomic condensate
• Theory of spin-2 Bose-Einstein condensates: spin-correlations, magnetic response, and excitation spectra
• Photoassociation spectroscopy of a Spin-1 Bose-Einstein condensate
• Calculation of the interspecies s-wave scattering length in an ultracold Na-Rb vapor
• A binary mixture of spinor atomic Bose-Einstein condensates
• Localization of spin mixing dynamics in a spin-1 Bose-Einstein condensate
• Quantum states of a binary mixture of spinor Bose-Einstein condensates
• Spontaneously axisymmetry breaking phase in a binary mixture of spinor Bose-Einstein condensates
• Atomic number fluctuations in a mixture of two spinor condensates

Cited by in corpus (8)

• Ground-state phases of a mixture of spin-1 and spin-2 Bose-Einstein condensates
• Quantum entangled ground states of two spinor Bose-Einstein condensates
• Density-functional theory for the spin-1 bosons in a one-dimensional harmonic trap
• Laser Control of Singlet-Pairing Process in an Ultracold Spinor Mixture
• Variation of the spin textures of 2-species spin-1 condensates studied beyond the single spatial mode approximation and the experimental identification of these textures
• Fragmentation of a spin-1 mixture in a magnetic field
• Phase separation and metastability in a mixture of spin-1 and spin-2 Bose-Einstein condensates
• Spin-textures of the Bose-Einstein condensates with three kinds of spin-1 atoms