Dark solitons on a spherical bubble BEC remain stable only below a critical nonlinear parameter and decay into vortex dipoles via a single unstable mode for each m ≥ 2, unlike full 3D cases that produce vortex rings.
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cond-mat.quant-gas 2years
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A repulsive Fermi gas on a sphere shows geometry-induced shell effects that modify low-temperature thermodynamics and produce a finite-temperature Stoner instability criterion for the balanced state.
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Stability of dark solitons in a bubble Bose-Einstein condensate
Dark solitons on a spherical bubble BEC remain stable only below a critical nonlinear parameter and decay into vortex dipoles via a single unstable mode for each m ≥ 2, unlike full 3D cases that produce vortex rings.
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Repulsive fermions and shell effects on the surface of a sphere
A repulsive Fermi gas on a sphere shows geometry-induced shell effects that modify low-temperature thermodynamics and produce a finite-temperature Stoner instability criterion for the balanced state.