Cosmic neutrino background as a ferromagnet

Lopez-Sarrion, Justo ; Arias, Paola ; Gamboa, Jorge

Resumen: If cosmic background neutrinos interact very weakly with each other, through spin–spin interactions, then they may have experienced a phase transition, leading to a ferromagnetic ordering. The small magnetic field resulting from ferromagnetic ordering – if present before galaxy formation – could act as a primordial seed of the magnetic fields observed in several galaxies. Our findings suggest that the magnetization could occur in the right epoch, if the exchange boson of neutrino–neutrino interaction is amassless boson beyond the Standard Model, with a coupling constant of 2.2 ×10−13 ( mν 10−4 eV )2 < g < 2.3 ×10−7. The estimation of the magnetic seed is 2.3 ×10−27 G≲ BCNB ≲6.8 ×10−10 G.

Idioma: Inglés

DOI: 10.1016/j.physletb.2014.06.034

Año: 2014

Publicado en: Physics Letters B 735 (2014), 173-175
ISSN: 0370-2693

Factor impacto JCR: 6.131 (2014)

Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 7 / 78 = 0.09 (2014) - Q1 - T1

Tipo y forma: Artículo (Versión definitiva)