CMB temperature-polarization (TE) and polarization-polarization (EE) power spectra at large angular scales (l < 30) show hints of suppressed correlations and features not perfectly matched by the best-fit ΛCDM model (Page 2007; Planck V 2020). The anomaly is statistically independent from the low-l temperature deficit (recid 32) and constitutes a separate joint TE/EE constraint.
The standard model with simple nearly scale-invariant primordial perturbations and a smooth single-epoch reionization predicts smooth TE/EE spectra across all angular scales. Recovering the joint low-l TE/EE anomalies within the model requires special initial conditions, modified reionization histories, or non-standard early-universe physics beyond the minimal framework.
SCT replaces the hot-dense-center with a superluminal collision and the thermalized debris field. From this single change, the bulk TE and EE spectra at l > 30 follow from the Plasma Equivalence Theorem: the cascade-thermalized plasma reaches the same six-parameter thermodynamic state as ΛCDM, so its acoustic and polarization evolution at small scales matches ΛCDM precisely (P29, P30). The small-scale TE/EE structure is therefore reproduced by construction.
The low-l TE/EE anomaly comes from two cascade-related sources. First, the cascade is intrinsically directional (P22, P41), so the largest-scale polarization modes carry the same axis-aligned suppression as the temperature low-l deficit (recid 32) and the connected quadrupoles (recid 18). Second, post-collision reheating events during the multi-stage cascade (P47) produce small additional polarization signals at low multipoles by re-ionizing localized regions at staggered times rather than in a single smooth reionization epoch. The net effect modifies TE and EE spectra below the pure-thermalization expectation.
The same M2 + M10 framework that resolves the low-l temperature deficit (recid 32) and the broader CMB anomaly family resolves the TE/EE anomaly. The polarization signature is one more observational window onto the same cascade-origin geometry. The TE/EE low-l axis is predicted to align with the Axis of Evil and the hemispherical-asymmetry axis, providing a multi-statistic cross-check on the common-collision-axis hypothesis. There is no need for non-standard reionization histories or anisotropic primordial spectra.
If LiteBIRD or CMB-S4 polarization measurements show the TE/EE low-l anomalies are statistically independent of the temperature low-l deficit (different axis, different amplitude profile) at greater than 3σ, the common-cascade-origin explanation fails. Equivalently, if the TE/EE structure can be recovered by a smooth single-epoch reionization at high precision, the multi-phase reheating contribution is refuted.