Ultrawide dark solitons and droplet-soliton coexistence in a dipolar Bose gas with strong contact interactions
arXiv:2207.03817 · doi:10.1103/PhysRevLett.130.043401
Abstract
We look into dark solitons in a quasi-1D dipolar Bose gas and in a quantum droplet. We derive the analytical solitonic solution of a Gross-Pitaevskii-like equation accounting for beyond mean-field effects. The results show there is a certain critical value of the dipolar interactions, for which the width of a motionless soliton diverges. Moreover, there is a peculiar solution of the motionless soliton with a non-zero density minimum. We also present the energy spectrum of these solitons with an additional excitation subbranch appearing. Finally, we perform a series of numerical experiments revealing the coexistence of a dark soliton inside a quantum droplet.
arXiv comment6+4 pages, 4+1 figures
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