Signatures of rigidity and second sound in dipolar supersolids

• URL: http://arxiv.org/abs/2506.22290v1
• Date: Fri, 27 Jun 2025 15:03:12 GMT
• Title: Signatures of rigidity and second sound in dipolar supersolids
• Authors: G. A. Bougas, T. Bland, H. R. Sadeghpour, S. I. Mistakidis,
• Abstract summary: Supersolids exhibit damped crystal oscillations following barrier removal, with the damping rate reflecting superfluid connectivity.<n>A phase-imprinted jump additionally triggers metastable dark solitons, which excites second sound, as revealed by an out-of-phase drift between the droplet lattice and the superfluid background.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We propose a dynamical protocol to probe the rigidity and phase coherence of dipolar supersolids by merging initially separated fragments in quasi-one-dimensional (1D) double-well potentials. Simulations based on the extended Gross-Pitaevskii equation reveal distinct dynamical signatures across phases. Supersolids exhibit damped crystal oscillations following barrier removal, with the damping rate reflecting superfluid connectivity. A phase-imprinted jump additionally triggers metastable dark solitons, which excites second sound, as revealed by an out-of-phase drift between the droplet lattice and the superfluid background. Our results show a realizable path to dynamically detect the second sound and rigidity of supersolids, as well as to realize and probe soliton formation.

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