Hollow cylindrical droplets in a very strongly dipolar condensate

S.K. Adhikari

Chaos, Solitons & Fractals, 2025, vol. 199, issue P3

Abstract: A harmonically trapped Bose–Einstein condensate (BEC) leads to topologically trivial compact states. Because of the long-range nonlocal dipole–dipole interaction, a strongly dipolar BEC revealed many novel phenomena. Here we show that in a strongly dipolar BEC one can have a hollow cylindrical quasi-one-dimensional metastable droplet with ring topology while the system is trapped only in the x-y plane by a harmonic potential and a Gaussian hill potential at the center and untrapped along the polarization z axis. In this numerical investigation we use the imaginary-time propagation of a mean-field model where we include the Lee–Huang–Yang interaction, suitably modified for dipolar systems. Being metastable, these droplets are weakly stable and we use real-time propagation to investigate its dynamics and establish stability.

Keywords: Bose–Einstein condensate; Dipolar atoms; Gross–Pitaevskii equation; Lee–Huang–Yang interaction (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:199:y:2025:i:p3:s0960077925009002

DOI: 10.1016/j.chaos.2025.116887

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