Unary Field Theory: The CMB B-Mode Bump at ℓ∼85–95from Reheating Oscillations

The Unary Field Theory (UFT) predicts a distinctive "bump" in the CMB B-mode polarization power spectrum at multipoles ℓ∼85–95, with amplitude r∼0.004. This feature arises from coherent oscillations of the unary field Ψduring the reheating phase following inflation, which modulate the primordial tensor power spectrum at a characteristic frequency set by the scalar field mass mϕ=1.1×10−22eV—the same mass governing ultralight scalar dark matter on galactic scales. Unlike generic Starobinsky inflation, where reheating is assumed instantaneous, the UFT links reheating dynamics directly to dark matter phenomenology, making the bump a parameter-free, cross-scale prediction. Detection strategy with LiteBIRD (launch ∼2032) and CMB-S4 is outlined. This work is part of the UFT series; for the foundational framework, see the main paper: https://doi.org/10.5281/zenodo.21186809.