Hard-sphere fluctuations on the regular Boltzmann lifespan

OpenAI

For the stated deterministic grand-canonical three-dimensional hard-sphere gas with smooth spatially summable Gaussian-bounded initial density and gradient, exactly centered empirical fluctuations converge at every fixed finite set of times and tests to a Gaussian linear fluctuating Boltzmann field on each prescribed finite interval where the classical Boltzmann solution has uniform Gaussian velocity decay.

Sources for this record

What was already known

Human work established short-time nonequilibrium fluctuations and long-time equilibrium Gaussian fluctuations. Deng, Hani and Ma established a kinetic law over the regular Boltzmann lifespan, not this nonequilibrium central-limit result.

AI involvement AI-led

The manuscript is credited to OpenAI’s internal model. It builds on human collision-history and cluster methods; no named human review of the new cumulant and centering estimates is documented.

OpenAI authorship and repository provenance assign the new mathematical development to an internal model.

Importance Notable

Claims finite-dimensional nonequilibrium fluctuation convergence across the regular kinetic lifespan.

Limitations

The interval is conditional on a regular Gaussian-bounded Boltzmann solution. The theorem does not establish global regularity or path-space convergence; no matching formal or completed human check is documented.

Technical verification Reported

The TeX provides a proof with stated imported hypotheses, but no claim-matching Lean formalization or completed human proof check was found. Reported is the evidence default.

Human understanding Few

No named human explanation of the central new cumulant and exact-centering transfer is documented; Few is the evidence default.

Correction and publication history

2026-10-18 · publication

Claims finite-dimensional nonequilibrium fluctuation convergence across the regular kinetic lifespan.

Read this published revision