CBR Anisotropy and the Running of the Scalar Spectral Index
Kosowsky, Arthur · Turner, Michael S.
Original · EN
Accurate (1%) predictions for the anisotropy of the Cosmic Background Radiation (CBR) are essential for using future high-resolution (1∘) CBR maps to test cosmological models. In many inflationary models the variation (``running'') of the spectral index of the spectrum of density perturbations is a significant effect and leads to changes of around 1% to 10% in the CBR power spectrum. We propose a general method for taking running into account which uses the derivative of the spectral index (dn/d k). Conversely, high-resolution CBR maps may be able to determine dn/d k, giving important information about the inflationary potential.
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