Neutrino number asymmetry and cosmological birefringence

Abstract

We 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.

8 pages, version to be published in JCAP

References in corpus (3)

• Massive neutrinos and cosmology
• Effect on cosmic microwave background polarization of coupling of quintessence to pseudoscalar formed from the electromagnetic field and its dual
• Spectral Dependence of CMB Polarization and Parity

Cited by in corpus (13)

• Constraints on CPT violation from WMAP three year polarization data: a wavelet analysis
• Searching for Anisotropic Cosmic Birefringence with Polarization Data from SPTpol
• Future CMB constraints on cosmic birefringence and implications for fundamental physics
• Large-scale magnetic fields from inflation due to Chern-Simons-like effective interaction
• Hypermagnetic Baryogenesis
• Fluctuations of cosmological birefringence and the effect on CMB B-mode polarization
• $CPT$ Violating Electrodynamics and Chern-Simons Modified Gravity
• Testing CPT Symmetry with Current and Future CMB Measurements
• Can we explain cosmic birefringence without a new light field beyond Standard Model?
• Cosmic Birefringence from Neutrino and Dark Matter Asymmetries
• Cross-correlation Power Spectra and Cosmic Birefringence of the CMB via Photon-neutrino Interaction
• Cosmological birefringence induced by neutrino current
• Cosmic Birefringence from CP-Violating Axion Interactions