Can suppression of growth on intermediate scales reduce the S8 difference between Planck and lensing surveys?
Public summary of an internal test, not yet independently validated or published.
Question investigated
Can suppression of growth on intermediate scales reduce the S8 difference between Planck and lensing surveys?
Test conditions
Fit the Gaussian S8 summaries with a common growth suppression, retaining the Planck distance constraints. A physical interpretation still requires relating the parameter to the linear spectrum and applying Lyman-alpha bounds to the transfer function on an equivalent basis.
Result
A common suppression improves the fit to the analyzed Gaussian S8 summaries. The result remains phenomenological: the link to a physical model and an equivalent application of Lyman-alpha bounds have not yet been established.
Physical interpretation
The fit tests a phenomenological description of growth suppression. It neither identifies a particle nor establishes a specific dark-matter mechanism.