Robust Signatures of the Relic Neutrinos in CMB

Details Robust Signatures of the Relic Neutrinos in CMB Robust Signatures of the Relic Neutrinos in CMB

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pasc.conf..212b&link_type=abstract

PASCOS 2004 Part I: Particles, Strings and Cosmology* Part II: Themes in Unification -- The Pran Nath Festschrift†. *,†Proceedin

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When the perturbations forming the acoustic peaks of the cosmic microwave background (CMB) reentered the universe horizon and interacted gravitationally with all the matter, neutrinos presumably comprised 41% of the universe energy. CMB experiments have already reached a capacity to probe this background of relic neutrinos. I discuss the imprints left by neutrinos on CMB anisotropy and polarization at the onset of the acoustic oscillations, the underlying physics, robustness or degeneracy of the imprints with changes of free cosmological parameters, and examples of non-minimal physics for decoupled relativistic species with detectable signatures in CMB.

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