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Large-scale magnetic fields from inflation due to Chern-Simons-like effective interaction
K. Bamba, C. Q. Geng, S. H. Ho
We discuss the generation of large-scale magnetic fields due to the breaking of the conformal invariance in the electromagnetic field through the -even dimension-six Chern-Sim…
Generic estimates for magnetic fields generated during inflation including Dirac-Born-Infeld theories
Kazuharu Bamba, Nobuyoshi Ohta, Shinji Tsujikawa
We estimate the strength of large-scale magnetic fields produced during inflation in the framework of Dirac-Born-Infeld (DBI) theories. This analysis is sufficiently general in the…
Inflation and late-time cosmic acceleration in non-minimal Maxwell- gravity and the generation of large-scale magnetic fields
Kazuharu Bamba, Sergei D. Odintsov
We study inflation and late-time acceleration in the expansion of the universe in non-minimal electromagnetism, in which the electromagnetic field couples to the scalar curvature f…
The interrelation between the generation of large-scale electric fields and that of large-scale magnetic fields during inflation
Kazuharu Bamba
The interrelation between the generation of large-scale electric fields and that of large-scale magnetic fields due to the breaking of the conformal invariance of the electromagnet…
Property of the spectrum of large-scale magnetic fields from inflation
Kazuharu Bamba
The property of the spectrum of large-scale magnetic fields generated due to the breaking of the conformal invariance of the Maxwell theory through some mechanism in inflationary c…
Large-scale magnetic fields in the inflationary universe
Kazuharu Bamba, Misao Sasaki
The generation of large-scale magnetic fields is studied in inflationary cosmology. We consider the violation of the conformal invariance of the Maxwell field by dilatonic as well…