Description This work proposes Layered Gravity (LG), a new minimal oscillatory extension of General Relativity in which the gravitational potential acquires an exponentially damped oscillatory correction. The modification preserves the second‑order structure of Einstein’s equations while introducing a microscopic layered structure in spacetime. We further develop the cosmological limit of the theory, Cosmological Layered Gravity (CLG), by extending the layered microstructure to homogeneous and isotropic FRW spacetimes. The resulting CLG‑modified Friedmann equations naturally generate oscillatory corrections to the Hubble parameter H(t) and the scale factor a(t), producing small but potentially observable “wiggles” in the expansion history H(z). The framework provides: a geometric mechanism for inflation‑like accelerated expansion without scalar fields, oscillatory deviations in gravitational redshift around compact objects, and an effective late‑time contribution that can mimic dark‑energy‑like behavior. Numerical analyses demonstrate the stability of the oscillatory corrections and identify parameter regions where LG/CLG signatures are testable with current and near‑future cosmological and astrophysical data. This work establishes LG/CLG as a falsifiable geometric alternative to scalar‑field‑based inflation and dark‑energy models.
Michito Gatto (Fri,) studied this question.