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Fermi Degeneracy Pressure vs Bose Collapse Simulator

Interactive trapped-quantum-gas simulator: load identical bosons or fermions into a harmonic trap and cool them toward absolute zero. Bosons collapse into a single point-like condensate; fermions cannot -- Pauli exclusion forces them to fill up a Fermi sea shell by shell, holding the cloud open against the trap even at T=0.

Physics & Mechanics3DAdvanced60 FPS💧 Water

Load identical bosons or fermions into a 3D isotropic harmonic trap and dial the temperature down toward absolute zero. Bosons are free to pile into the single lowest-energy quantum state, so the cloud shrinks into a tight point-like condensate. Fermions cannot — the Pauli exclusion principle forbids two of them from sharing a quantum state, so they are forced to stack up shell by shell into a Fermi sea that stays open and exerts a real degeneracy pressure outward against the trap, even at T=0 with no thermal motion left at all.

⚙ Under the hood

Load identical bosons or fermions into a 3D harmonic trap and cool toward absolute zero. Bosons collapse into a single point-like condensate below Tc; fermions cannot -- Pauli exclusion forces them to stack shell by shell into a Fermi sea that stays open and exerts real degeneracy pressure even at T=0.

Three.jsFermi DegeneracyBose-Einstein CondensatePauli ExclusionUltracold AtomsQuantum GasFermi Sea

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install