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Inflaton and the boltzmann equation's density/velocity sources

  1. Jul 9, 2009 #1
    Hi,

    I'm looking for a resource which explains how the inflaton (and metric) perturbations are related to the CMB; in particular a lot of common sources (Dodelson in particular and some reviews I found on arxiv) simply state that the photon-baryon fluid has a 'monopole' (density perturbation) and a 'dipole' (velocity perturbation) term. The first is related to the CMB via dT/T = 1/3 \phi according to sachs-wolfe, but I can't find anyone who shows how to get the velocity perturbation term from the inflaton/metric perturbations.

    Thanks for any help,
    Dan
     
  2. jcsd
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