Featured Papers

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Geometric Inflation and Late-Time Cosmic Acceleration from Embedded Spacetime Dynamics

Ali Nayeri & Clifford Ellgen

Abstract: We develop a cosmological framework in which spacetime is treated as a four-dimensional manifold dynamically embedded in a higher-dimensional flat Minkowski background. Ultrarelativistic motion of the embedded manifold induces strong time-dilation effects between embedding time and proper time, generating a genuine phase of inflation with strict exponential expansion for comoving observers, without invoking an inflaton field or scalar potential. The inflationary phase satisfies the defining kinematic criteria, including a shrinking comoving Hubble radius, and admits a natural graceful exit as time dilation weakens. At late times, large-scale embedding dynamics give rise to a geometric expansion attractor that yields sustained cosmic acceleration without a bare cosmological constant. More generally, the attractor can be quasi-stationary, allowing a slow weakening of the effective acceleration rate while remaining non-phantom. Small deviations from uniform embedding motion excite long-wavelength co-dimensional modes that generate subdominant oscillatory corrections to the expansion rate. We derive the structure of linear perturbations arising from embedding fluctuations and show that they naturally produce nearly scale-invariant curvature perturbations with a suppressed tensor-to-scalar ratio. This framework provides a unified geometric origin for inflation, primordial structure, and late-time acceleration, without new fields or fine tuning.

Preprint

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Finite path integrals on stochastic branched structures

Roukaya Dekhil, Clifford Ellgen, & Bruno Klajn

Abstract: In this paper, we present a statistical model of spacetime trajectories based on a finite collection of paths organized into a branched manifold. For each configuration of the branched manifold, we define a Shannon entropy. Given the variational nature of both the action in physics and the entropy in statistical mechanics, we explore the hypothesis that the classical action is proportional to this entropy. Under this assumption, we derive a Wick-rotated version of the path integral that remains finite and exhibits both quantum interference at the microscopic level and classical determinism at the macroscopic scale. In effect, this version of the path integral differs from the standard one because it assigns weights of non-uniform magnitude to different paths. The model suggests that wave function collapse can be interpreted as a consequence of entropy maximization. Although still idealized, this framework provides a possible route toward unifying quantum and classical descriptions within a common finite-entropy structure.

Preprint

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