出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：If a primordial magnetic eld was present during photon decoupling and afterward, a nite neutrino
mass could affect the Cosmic Microwave Background (CMB). In previous work [1], we
studied the effect of a neutrino mass on the vector and tensor modes of the CMB power spectra.
In this work, we also calculated the scalar mode and found that a neutrino mass also has a large
effect on it. We decomposed the scalar, vector and tensor modes into Integrated Sachs-Wolfe
(ISW), polarization (Pol), doppler (Dop) and Sachs-Wolfe (SW) components, and studied which
components are affected strongly by the neutrino mass. We found that a cancellation among
neutrino effects on these components offsets each other and the total effect becomes small.
