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arXiv · 1607.07184

Droplets of trapped quantum dipolar bosons

A. Macia·J. Sánchez-Baena·J. Boronat·F. Mazzanti
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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.

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A. Macia, J. Sánchez-Baena, J. Boronat, F. Mazzanti. 2016-07-25. Droplets of trapped quantum dipolar bosons. https://doi.org/10.1103/physrevlett.117.205301

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