Title of article
An alternative to inflation? Critical role of neutrino anisotropic stress in CMB
Author/Authors
Kajino، نويسنده , , T. and Kojima، نويسنده , , K. and Yamazaki، نويسنده , , D. and Ichiki، نويسنده , , K. and Mathews، نويسنده , , G.J.، نويسنده ,
Pages
3
From page
378
To page
380
Abstract
We study the role of anisotropic stress in the evolution of curvature perturbations and the cosmic microwave background (CMB) power spectrum. We found that if the extra anisotropic stress preexisted before the neutrino decoupling, the cancellation of the anisotropic stress of neutrinos and extra anisotropic stress could lead to a spectrum that could reproduce the observed CMB power spectrum.
Keywords
CMB , Neutrino , Anisotropic stress
Journal title
Astroparticle Physics
Record number
2042640
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