Boundary-Induced Mode Differentiation in CMB Observables A Four-Layer Identity Audit of TT, EE, and TE Spectra

Standard cosmological models often overlook the direct mode-to-mode identity between different CMB channels. This paper presents a "Four-Layer Identity Audit" (4-Audit) to investigate whether TT, EE, and TE observables share a common initial potential (\psi). Key Discoveries: Shared Structure: Low-multipole structural correlation (\ell \le 30) remains high at 65.0%, confirming a unified primordial origin. Hidden Identity: Although raw correlations appear to "collapse" at higher scales, shape-focused residual analysis reveals an identity score of 99.6% (TT–EE) and 98.9% (TT–TE). Phase Shifts: Divergence in mid-to-high \ell ranges is demonstrated to be a consequence of boundary-induced phase shifts rather than independent stochastic generation. Framed within Yuuki Theory, these findings redefine CMB "collapse" as a physical transition governed by boundary physics (e.g., surface tension and phase resistance) rather than a breakdown of primordial coherence.