000150371 001__ 150371 000150371 005__ 20251017144612.0 000150371 0247_ $$2doi$$a10.1016/j.physletb.2014.06.034 000150371 0248_ $$2sideral$$a142396 000150371 037__ $$aART-2014-142396 000150371 041__ $$aeng 000150371 100__ $$0(orcid)0000-0002-2868-194X$$aLopez-Sarrion, Justo 000150371 245__ $$aCosmic neutrino background as a ferromagnet 000150371 260__ $$c2014 000150371 5060_ $$aAccess copy available to the general public$$fUnrestricted 000150371 5203_ $$aIf cosmic background neutrinos interact very weakly with each other, through spin–spin interactions, then they may have experienced a phase transition, leading to a ferromagnetic ordering. The small magnetic field resulting from ferromagnetic ordering – if present before galaxy formation – could act as a primordial seed of the magnetic fields observed in several galaxies. Our findings suggest that the magnetization could occur in the right epoch, if the exchange boson of neutrino–neutrino interaction is amassless boson beyond the Standard Model, with a coupling constant of 2.2 ×10−13 ( mν 10−4 eV )2 < g < 2.3 ×10−7. The estimation of the magnetic seed is 2.3 ×10−27 G≲ BCNB ≲6.8 ×10−10 G. 000150371 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es 000150371 590__ $$a6.131$$b2014 000150371 591__ $$aPHYSICS, MULTIDISCIPLINARY$$b7 / 78 = 0.09$$c2014$$dQ1$$eT1 000150371 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000150371 700__ $$aArias, Paola 000150371 700__ $$aGamboa, Jorge 000150371 773__ $$g735 (2014), 173-175$$pPhys. lett., Sect. B$$tPhysics Letters B$$x0370-2693 000150371 8564_ $$s224318$$uhttps://zaguan.unizar.es/record/150371/files/texto_completo.pdf$$yVersión publicada 000150371 8564_ $$s2755669$$uhttps://zaguan.unizar.es/record/150371/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000150371 909CO $$ooai:zaguan.unizar.es:150371$$particulos$$pdriver 000150371 951__ $$a2025-10-17-14:17:50 000150371 980__ $$aARTICLE