Large-scale magnetic fields from inflation due to Chern-Simons-like effective interaction

Abstract

We discuss the generation of large-scale magnetic fields due to the breaking of the conformal invariance in the electromagnetic field through the $CPT$-even dimension-six Chern-Simons-like effective interaction with a fermion current in inflationary cosmology. It is shown that the magnetic fields on 1Mpc scale with the field strength of $\sim 10^{-9}$G at the present time can be generated even for the scale of the effective interaction being the Planck scale.

13 pages, 2 figures, additional explanations included

References in corpus (10)

• Generation of Large-Scale Magnetic Fields in Single-Field Inflation
• Effects of a Primordial Magnetic Field on Low and High Multipoles of the CMB
• Generation of Cosmological Seed Magnetic Fields from Inflation with Cutoff
• Seed perturbations for primordial magnetic fields from MSSM flat directions
• Cosmological magnetic fields from nonlinear effects
• Hypermagnetic Baryogenesis
• Neutrino number asymmetry and cosmological birefringence
• Slow decay of magnetic fields in open Friedmann universes
• Cosmological birefringence induced by neutrino current
• CPT conserving cosmological birefringence

Cited by in corpus (3)

• Dark Energy Model with Spinor Matter and Its Quintom Scenario
• Newton's constant in f(R,R_{μν}R^{μν},\Box R) theories of gravity and constraints from BBN
• Primordial magnetic fields and gravitational baryogenesis in nonlinear electrodynamics