Silk Damping · Photon Diffusion in the Primordial Plasma
unseel.com · diffusion damping · CMB damping tail · ℓ > 1000
Diffusion length 0 Mpc
Damps above ℓ ≈ —
State
Hot overdensity
Cold underdensity
Diffusing photon
Damping tail (C_ℓ)
Unseel.com · Silk Damping