Selective decohrence during cosmic expansion

This paper presents a theoretical framework paper. A companion paper providing the full MCMC constraint of the model parameters {k_c, β} against Planck 2018 TT+TE+EE+lowE data using CAMB is currently in preparation (Kumar 2026, in prep.) and will be submitted to JCAP within six months.The author requests that the manuscript be handled by an editor with expertise in inflation and/or CMB theory, given the quantum decoherence and power spectrum content. Suggested reviewers would include specialists familiar with the works of Kiefer, Polarski & Starobinsky (1998), Lombardo & Nacir (2005), and Nelson (2016), which are the primary comparison points for the novelty claims.