• Corpus ID: 119382695

Initial power spectrum shape

  title={Initial power spectrum shape},
  author={Marian Douspis},
  journal={arXiv: Astrophysics},
  • M. Douspis
  • Published 1 December 2004
  • Physics
  • arXiv: Astrophysics
Mainly used to set constraints on cosmological parameters, CMB anisotropies can give information on primordial universe. Unfortunately, initial conditions and late time cosmology are degenerated. I focus on the effect of the shape of the initial power spectrum of fluctuations on the cosmological parameter estimation from CMB temperature anisotropies. Strong constraints obtained using a priori knowledge of the initial spectrum disappear when the latter is let free. 

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