Two-field cosmological models and large-scale cosmic magnetic fields

Abstract

We consider two different toy cosmological models based on two fields (one normal scalar and one phantom) realizing the same evolution of the Bang-to-Rip type. One of the fields (pseudoscalar) interacts with the magnetic field breaking the conformal invariance of the latter. The effects of the amplification of cosmic magnetic fields are studied and it is shown that the presence of such effects can discriminate between different cosmological models realizing the same global evolution of the universe.

12 pages, 3 figures

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Cited by in corpus (7)

• Multi-Instantons and Exact Results III: Unified Description of the Resonances of Even and Odd Anharmonic Oscillators
• Parity Violating Statistical Anisotropy
• Cosmic Acceleration and Anisotropic models with Magnetic field
• Large-scale magnetic fields from inflation due to a $CPT$-even Chern-Simons-like term with Kalb-Ramond and scalar fields
• Magnetized cosmological model with variable deceleration parameter
• Generalized Nonanalytic Expansions, PT-Symmetry and Large-Order Formulas for Odd Anharmonic Oscillators
• The relation between Geometry and Matter in classical and quantum Gravity and Cosmology