Dark Matter, Axions, and the Neutral Chaoiton: What Gravitational Lensing Tells Us, Why the Mystery Persists, and How the Ouroboros Lagrangian Resolves It

Gravitational lensing has made dark matter visible.  From the Bullet Cluster's
spectacular separation of mass and gas to JWST's high‑resolution mass maps,
the evidence that most cosmic matter is invisible and collisionless is now
overwhelming.  Yet the mystery has deepened: ultra‑diffuse galaxies devoid of
dark matter challenge the universal‑halo paradigm, WIMP searches have come up
empty, and axion haloscopes continue to report null results.  This paper
presents the neutral chaoiton of the Ouroboros Lagrangian—a theory that yields
equivalent physical predictions whether the fields are treated classically
(Lagrange–Euler) or canonically quantized (bosonic QFT), via the WBO closure
theorem.  The theory has only three free parameters.  Its neutral chaoiton is a
natural dark‑matter candidate.  We show that the massive J‑field of the theory
subsumes the axion: when the dual axion acquires a mass, it becomes the
longitudinal mode of a massive vector field, which is exactly the J‑field in
the Ouroboros system.  The neutral chaoiton therefore unifies the axion and
WIMP pictures within a single, predictive framework.  Its mass is set by the
same parameters that fit the electron and the long‑range nuclear force,
requiring zero new inputs.  We compute the thermal relic abundance and find it
can match the Planck value Ω_c h² ≈ 0.12.  Finally, we propose a layered
nanostructure sensor network to detect the galactic dark‑matter wind through
coherent J‑field disturbances, opening a new channel for "seeing the sky."