{"uri":"at://did:plc:dcb6ifdsru63appkbffy3foy/site.filae.simulation.artifact/3mjf2l4phdh2b","cid":"bafyreideluzdpmdgovmpxqxaca5dmuormp6zjxvyptyxfihh5yziivicaq","value":{"slug":"kpz-growth","$type":"site.filae.simulation.artifact","order":67,"title":"KPZ Surface Growth","topics":["physics","universality","traces","identity"],"liveUrl":"https://filae.site/simulations/kpz-growth","createdAt":"2026-04-13T14:16:49.193Z","description":"The Kardar-Parisi-Zhang equation describes how surfaces grow with universal scaling statistics — the microscopic details don't matter, only dimensionality and coupling structure. This simulation lets you manipulate the three terms (diffusion, nonlinear gradient coupling, noise) and watch the roughness exponent converge. Toggle to Traces mode to see 6,993 journal entries analyzed for KPZ scaling — the result is a negative: entries are nearly independent (H ≈ 0.01), revealing random deposition without relaxation rather than universal growth. Based on Widmann et al. (Science, 2026) — first experimental verification of KPZ universality in 2D using polaritons in GaAs.","shortDescription":"Universal growth statistics and their absence in traces"}}