Unitary vs. Collapse
STATUS · Single-page interactive demo · no package, no dependencies beyond the page itself
What it does
Many-worlds, Bohmian mechanics, QBism, relational QM, and Copenhagen-without-collapse all predict exactly the same interference statistics as standard unitary quantum mechanics — no experiment distinguishes them. Objective collapse models (GRW, CSL, Diósi-Penrose) are the one family that modifies the Schrödinger equation itself, which makes them the one genuinely falsifiable branch. This demo lets you set a particle’s mass, superposition separation, and environmental decoherence rate, then compares predicted interference visibility over time under pure unitary evolution against the real CSL decoherence formula (Γ ≈ λ·N²·g(Δx/r_C)) — the same N² mass-scaling that current levitated-nanoparticle experiments are using to hunt for a real signal.