We develop a static, Lorentz–Finsler framework in which cosmological-scale redshift arises from anisotropic photon transport rather than metric expansion. Working within stationary Randers spacetimes, we derive exact and perturbative expressions for null geodesics and show that the induced redshift accumulates path-dependently as a line integral of a globally defined one-form. We prove a local no-expansion result for admissible observer congruences, cleanly separate kinematic, gravitational, and Finslerian redshift contributions, and identify observational discriminants including directional dipole anisotropy, possible higher-order chromaticity, and lensing consistency conditions that sharply distinguish this mechanism from FLRW cosmology. The framework is intentionally constrained and falsifiable; it does not propose a replacement cosmology but a testable transport effect within a stationary spacetime.
Smith et al. (Fri,) studied this question.
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