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Hollow cylindrical droplets in a very strongly dipolar condensate

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  • Adhikari, S.K.

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.

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  • Adhikari, S.K., 2025. "Hollow cylindrical droplets in a very strongly dipolar condensate," Chaos, Solitons & Fractals, Elsevier, vol. 199(P3).
    • Handle: RePEc:eee:chsofr:v:199:y:2025:i:p3:s0960077925009002
    DOI: 10.1016/j.chaos.2025.116887
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