Small scale cosmological perturbations: An Analytic approach

  title={Small scale cosmological perturbations: An Analytic approach},
  author={W. Hu and N. Sugiyama},
  journal={The Astrophysical Journal},
  • W. Hu, N. Sugiyama
  • Published 1996
  • Physics
  • The Astrophysical Journal
  • 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 photons causes alternating acoustic peak heights in the CMB and is uncovered in its bare form under the photon diffusion scale. Decoupling of the photons… CONTINUE READING
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