Neutrino number asymmetry and cosmological birefringence

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dc.creatorGeng, C. Q.
dc.creatorHo, S. H.
dc.creatorNg, J. N.
dc.date2007-06-01
dc.date2007-08-21
dc.date.accessioned2026-07-07T11:16:30Z
dc.date.available2026-07-07T11:16:30Z
dc.descriptionWe study a new type of effective interactions in terms of the $CPT$-even dimension-six Chern-Simons-like term, which could originate from superstring theory, to generate the cosmological birefringence. We use the neutrino number asymmetry to induce a sizable rotation polarization angle in the data of the cosmic microwave background radiation polarization. The combined effect of the new term and the neutrino asymmetry provides an alternative way to understand the birefringence.
dc.description8 pages, version to be published in JCAP
dc.identifierhttps://arxiv.org/abs/0706.0080
dc.identifierhttp://arxiv.org/abs/0706.0080
dc.identifierJCAP0709:010,2007
dc.identifierdoi:10.1088/1475-7516/2007/09/010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192694
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleNeutrino number asymmetry and cosmological birefringence
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