Numerical simulations of merging dipolar supersolid fragments show damped crystal oscillations reflecting superfluid connectivity and out-of-phase drifts indicating second sound excitation via phase-imprinted dark solitons.
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In a spherical-shell Bose-Einstein condensate, Jones-Roberts solitary waves mark the onset of rotation, evolving from vortex dipoles to hybrid equatorial modes whose speed limits the entire family via a Landau critical velocity.
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Signatures of rigidity and second sound in dipolar supersolids
Numerical simulations of merging dipolar supersolid fragments show damped crystal oscillations reflecting superfluid connectivity and out-of-phase drifts indicating second sound excitation via phase-imprinted dark solitons.
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Jones-Roberts solitary waves and the onset of rotation in a spherical surface condensate
In a spherical-shell Bose-Einstein condensate, Jones-Roberts solitary waves mark the onset of rotation, evolving from vortex dipoles to hybrid equatorial modes whose speed limits the entire family via a Landau critical velocity.