In a parity-symmetric universe with statistically isotropic Gaussian initial conditions, correlations between temperature and B-mode polarization (TB) and between E- and B-mode polarization (EB) should vanish. Recent Planck reanalyses detect non-zero TB and EB cross-power at greater than 3σ (Lue 1999; Kamionkowski & Kovetz 2016). The signal is interpreted as evidence for parity-violating physics, cosmic birefringence, or unaccounted foreground geometry.
The standard model assumes parity symmetry plus statistical isotropy of inflationary initial conditions. Under those assumptions, TB and EB cross-power must be zero by construction. Recovering the observed signal within the model requires either new parity-violating fields or appeal to complex foreground geometry, neither of which is parsimonious.
SCT replaces the hot-dense-center with a superluminal collision and the thermalized debris field. From this single change, parity-odd correlations are predicted from the cascade geometry itself. The original collision deposited an angular momentum vector J = μ(b × v_rel) into our patch (P22, P31, P32). The cross product b × v_rel is parity-odd by construction; any observable that inherits this geometric structure carries parity-odd signatures naturally, with no need for new fields.
The cascade-stream filament network (P34, P36) propagates the J vector to all CMB multipoles simultaneously. The Plasma Equivalence Theorem (P29, P30) preserves the geometric imprint through the post-thermalization evolution to recombination, so the resulting CMB carries TB and EB cross-power at the level set by the cascade impact-parameter geometry. The TB/EB axis is predicted to align with the Axis of Evil (recid 24), the hemispherical-asymmetry axis (recid 28), the bipolar power spectrum axis (recid 29), the connected-quadrupoles axis (recid 18), and the CMB dipole direction (P64).
Six anomalies tracing back to one collision-deposited J vector. The TB/EB signal is one more observational projection of the same underlying cascade geometry, detected by polarization-cross-correlation statistics rather than the temperature-only estimators that picked up the other five. There is no need to invoke axion-like fields, cosmic birefringence, or unaccounted polarized-dust foregrounds.
If the TB/EB axis is statistically incompatible with the Axis of Evil and bipolar-power axes at greater than 3σ (i.e., the parity-odd signal does not share the same direction as the other large-angle anomalies), the M10 common-collision-axis explanation fails. CMB-S4 polarization will sharpen the cross-axis test in the next few years.