The standard inflationary paradigm successfully resolves the horizon, flatness, and monopole problems while generating a nearly scale-invariant spectrum of primordial perturbations, yet its reliance on an undetected inflaton field remains a foundational weakness. We propose an alternative mechanism within the Chute Cosmology framework (Barkley, 2026), in which the observable universe is Shell 7 in a recursive chain of nested black hole interiors. In this framework, cosmic inflation is reinterpreted as the interior experience of a catastrophic brane deflation event—the structural failure of the parent shell's membrane at the moment of black hole formation. The mechanism proceeds in three phases: (1) an initial catastrophic deflation producing the exponential expansion of classic inflation; (2) a first rebound corresponding to reheating and the hot Big Bang; and (3) a series of damped oscillations that persist over cosmological timescales, producing epoch-dependent variations in the expansion rate. The oscillatory phase offers potential explanations for the deceleration-to-acceleration transition, known CMB anomalies, anomalous components in baryon acoustic oscillation measurements, and the Hubble tension. We develop a damped harmonic oscillator model for the scale factor, derive connections between brane parameters and standard inflationary observables, and present eight testable predictions distinguishing this framework from single-field slow-roll inflation. The model eliminates the inflaton field entirely, replacing it with the geometry of shell transition—a purely mechanical process requiring no new particles or potentials.
Barkley et al. (Tue,) studied this question.