Josephson effect and quantum merging of two Bose superfluids
arXiv:cond-mat/0606226 · doi:10.1103/PhysRevB.73.224505
Abstract
We consider the Josephson effect when two independent Bose superfluids are weakly connected. In the presence of interparticle interaction and based on the calculations of the one-particle density matrix of the whole system, we find that the one-particle density matrix can be factorized which satisfies the general criterion of Bose superfluid proposed by Penrose and Onsager. By introducing an effective order parameter for the whole system, our researches show that there is Josephson effect for two independent Bose superfluids.
9 pages, 4 figures. two typos in Eqs. (19) and (22) are corrected in this version
References in corpus (9)
- Direct Observation of Tunneling and Nonlinear Self-Trapping in a single Bosonic Josephson Junction
- Quantum Coherent Atomic Tunneling between Two Trapped Bose-Einstein Condensates
- Nonlinear Self-Trapping of Matter Waves in Periodic Potentials
- Spatial fragmentation of a Bose-Einstein condensate in a double-well potential
- Dynamic splitting of a Bose-Einstein Condensate
- Phase dynamics after connection of two separate Bose-Einstein condensates
- Splitting and merging an elongated Bose-Einstein condensate at finite temperature
- Adiabatic and non-adiabatic merging of independent Bose condensates
- Barrier effects on the collective excitations of split Bose-Einstein condensates
Cited by in corpus (7)
- Nonequilibrium Josephson oscillations in Bose-Einstein condensates without dissipation
- Quantum catastrophes and ergodicity in the dynamics of bosonic Josephson junctions
- Emergence of singularities from decoherence: Quantum catastrophes
- Build-up of coherence between initially-independent subsystems: The case of Bose-Einstein condensates
- Imaginary Potential Induced Quantum Coherence for Bose-Einstein Condensates
- Density-density correlation and interference mechanism for two initially independent Bose-Einstein condensates
- Dissipative dynamics of the Josephson effect in the binary Bose-condensed mixtures