https://doi.org/10.1140/epjc/s10052-015-3510-x
Regular Article - Theoretical Physics
Lorentz-violating inflationary magnetogenesis
Dipartimento di Fisica, Università di Bari, 70126, Bari, Italy
* e-mail: leonardo.campanelli@ba.infn.it
Received:
20
May
2015
Accepted:
8
June
2015
Published online:
23
June
2015
A non-conformally invariant coupling between the inflaton and the photon in the minimal Lorentz-violating standard model extension is analyzed. For specific forms of the Lorentz-violating background tensor, the strong-coupling and back-reaction problems of magnetogenesis in de Sitter inflation with scale 
are evaded, the electromagnetic-induced primordial spectra of (Gaussian and non-Gaussian) scalar and tensor curvature perturbations are compatible with cosmic microwave background observations, and the inflation-produced magnetic field directly accounts for cosmic magnetic fields.
© The Author(s), 2015
