Planck SZ Cluster Counts vs Primary CMB

The ΛCDM Tension

Planck's SZ cluster counts demand sigma_8 below its own primary CMB's value unless clusters weigh 40 percent more than hydrostatic masses say, (1-b) near 0.6, while weak lensing calibrates near 0.8 and the measured ICM quiescence (6 percent non-thermal pressure) leaves no kinetic room for the deficit. The loop will not close: counts need a bias the gas cannot carry and the lensing will not certify.

The ΛCDM Assumption That Creates It

The model assumes one mass per cluster: gravitating, lensing, and hydrostatic masses must agree up to gas kinetics. The bias must therefore be kinetic or systematic, and with the kinetics measured calm, the model is left auditing its calibrations in a circle while the count deficit joins the S₈ family.

SCT Resolution: M6 (Two Honest Masses)

SCT breaks the one-mass assumption: a cluster's gravitating signal is its baryonic mass amplified by coherence, A approaching A* = 5.970 at the virial scale (P50, P52, P53), so lensing and dynamics read the amplified effective mass while X-ray hydrostatics read the gas pressure of the baryons actually present. The hydrostatic-to-lensing offset is then structural, not kinetic: calm gas and discrepant masses coexist because they measure different things, which is precisely the configuration the data insist on. The SZ-count loop closes the same way: converting SZ signal to mass through a ΛCDM template misweighs the population, and the registered scaling carries the discriminant, with the apparent bias growing with richness as A does (the Pred 35 structure, M_WL/M_hyd tracking A with richness), rather than sitting constant as a calibration error would.

The count cosmology inherits the S₈ resolution: the CMB-normalized prediction overcounts expected clusters because part of the early-universe amplitude bookkeeping attributes coherence to matter; with the mesh modeled, counts and primary CMB agree without a 40 percent kinetic fiction. One coherence term, three reconciliations: counts, bias, and quiescence.

This is the same amplification behind the cluster baryon-product identity (A × f_b = 0.1675, confirmed at 0.01σ) and the lensing-is-low family. There is no need to make calm gas carry kinetic debts.

Falsifier

The registered kill: richness-binned calibrations finding the hydrostatic bias independent of richness at more than 3σ, or the S₈-family tension independent of cluster mass, breaks the A-scaling that reconciles the loop. Euclid's thousands of SZ-cluster lensing masses are the decisive dataset: a constant (1-b) of 0.8 across richness with the count deficit persisting would leave both frameworks owing an explanation, but the coherence account specifically requires the richness trend.

Premise Grounding

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