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- W2891654382 abstract "We study the process of inflationary magnetogenesis in the natural single-field inflation model, whose parameters are chosen in accordance with the recent observations by the Planck collaboration [1]. The conformal invariance of the Maxwell action is broken by a kinetic coupling with the inflaton field by means of the coupling function as a power of the scale factor, I(ф) ∝ aa, and a < 0 is used in order to avoid the strong coupling problem. For such a, the electric component of the energy density dominates over the magnetic one and, for a <- −2.2, it causes a strong back-reaction, which can spoil inflation and terminate the enhancement of the magnetic field. It is found that the magnetic fields generated without back-reaction problem cannot exceed ∼10−20G at the present epoch, and their spectrum has a blue tilt." @default.
- W2891654382 created "2018-09-27" @default.
- W2891654382 creator A5067317246 @default.
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- W2891654382 date "2018-09-07" @default.
- W2891654382 modified "2023-10-02" @default.
- W2891654382 title "Magnetogenesis in Natural Inflation Model" @default.
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- W2891654382 doi "https://doi.org/10.15407/ujpe63.8.673" @default.
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