Generation of large-scale magnetic fields from inflation in
  teleparallelism
  We explore the generation of large-scale magnetic fields from inflation in
teleparallelism, in which the gravitational theory is described by the torsion
scalar instead of the scalar curvature in general relativity. In particular, we
examine the case that the conformal invariance of the electromagnetic field
during inflation is broken by a non-minimal gravitational coupling between the
torsion scalar and the electromagnetic field. It is shown that for a power-law
type coupling, the magnetic field on 1 Mpc scale with its strength of $\sim
10^{-9}$ G at the present time can be generated.
