Droplets of trapped quantum dipolar bosons

Abstract

Strongly interacting systems of dipolar bosons in three dimensions confined by harmonic traps are analyzed using the exact Path Integral Ground State Monte Carlo method. By adding a repulsive two-body potential, we find a narrow window of interaction parameters leading to stable ground- state configurations of droplets in a crystalline arrangement. We find that this effect is entirely due to the interaction present in the Hamiltonian without resorting to additional stabilizing mechanisms or specific three-body forces. We analyze the number of droplets formed in terms of the Hamiltonian parameters, relate them to the corresponding s-wave scattering length, and discuss a simple scaling model for the density profiles. Our results are in qualitative agreement with recent experiments showing a quantum Rosensweig instability in trapped Dy atoms.

5 pages, 4 figures

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• Bose-Einstein condensation of chromium
• Bose-Einstein Condensation of Erbium
• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• Strong dipolar effects in a quantum ferrofluid
• d-wave collapse and explosion of a dipolar Bose-Einstein condensate
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Cited by in corpus (9)

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• Striped states in a many-body system of tilted dipoles
• Two-dimensional dipolar gap solitons in free space with spin-orbit coupling
• Low-Dimensional Self-Bound Quantum Rabi-Coupled Bosonic Droplets
• Numerical calculation of dipolar quantum droplet stationary states
• Properties of strongly dipolar Bose gases beyond the Born approximation
• Probing the supersolid order via high-energy scattering: analytical relations among response, density modulation, and superfluid fraction
• Quantum correlations in dipolar droplets: Time-dependent Hartree-Fock-Bogoliubov theory
• Gapped spectrum in pair-superfluid bosons