Small‐Scale Cosmological Perturbations: An Analytic Approach
Small‐Scale Cosmological Perturbations: An Analytic Approach
Through analytic techniques verified by numerical calculations, we establish general relations between the matter and cosmic microwave background (CMB) power spectra and their dependence on parameters on small scales. Fluctuations in the CMB, baryons, cold dark matter (CDM), and neutrinos receive a boost at horizon crossing. Baryon drag on the …