In a rotating Bose-Einstein condensate, angular momentum is quantized: vortices form a triangular Abrikosov lattice. Each vortex carries exactly one quantum of circulation κ = h/m. Watch the lattice emerge as rotation Ω increases.
Vortex count Nv ≈ — | Vortex density nv = 2Ω/κ (Feynman rule) | Lattice: triangular (Abrikosov)