Black-hole lasing in coherently coupled two-component atomic condensates
arXiv:1702.07533 · doi:10.1103/PhysRevA.96.013611
Abstract
We theoretically study the black-hole lasing phenomenon in a flowing one-dimensional, coherently coupled two component atomic Bose-Einstein condensate whose constituent atoms interact via a spin-dependent s-wave contact interaction. We show by a numerical analysis the onset of the dynamical instability in the spin branch of the excitations, once a finite supersonic region is created in this branch. We study both a spatially homogeneous geometry and a harmonically trapped condensate. Experimental advantages of the two-component configuration are pointed out, with an eye towards studies of back-reaction phenomena.
General improvements, corrections and references added
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- Strongly Interacting Two-component Coupled Bose Gas in Optical Lattices
- Phase transitions of the coherently coupled two-component Bose gas in a square optical lattice
- Superradiant phononic emission from the analog spin ergoregion in a two-component Bose-Einstein condensate
- Finite-temperature phase diagram and collective modes of coherently coupled Bose mixtures