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- W2895539130 abstract "Primordial magnetic field generated in the inflationary era can act as a viable source for present day intergalactic magnetic field of significant strength. We present a fundamental origin for such primordial generation of magnetic field, namely through anomaly cancellation of $U(1)$ gauge field in quantum electrodynamics. Addition of this term explicitly breaks conformal invariance of the theory necessary to generate magnetic field of sufficient strength. We have analysed at length the power spectrum of the magnetic field thus generated. We have also found that magnetic power spectrum has significant scale-dependance giving rise to a non-trivial magnetic spectral index, a key feature of this model. Interestingly, there exists a large parameter space where magnetic field of significant strength can be produced." @default.
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- W2895539130 date "2018-10-05" @default.
- W2895539130 modified "2023-09-27" @default.
- W2895539130 title "Inflationary Magnetogenesis and Anomaly Cancellation in Electrodynamics" @default.
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