Journal
PHYSICAL REVIEW D
Volume 106, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.106.063016
Keywords
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Funding
- INFN program on Theoretical Astroparticle Physics
- JSPS KAKENHI [JP16H06492, JP22K03595]
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In this study, we present new bounds on the cosmic abundance of magnetic monopoles by examining the survival of primordial magnetic fields during the reheating and radiation-dominated epochs. These new bounds can be stronger than the conventional Parker bound and bounds from direct searches. We also investigate the monopoles produced by the primordial magnetic fields themselves and derive additional conditions for the survival of the primordial fields.
We present new bounds on the cosmic abundance of magnetic monopoles based on the survival of primordial magnetic fields during the reheating and radiation-dominated epochs. The new bounds can be stronger than the conventional Parker bound from Galactic magnetic fields, as well as bounds from direct searches. We also apply our bounds to monopoles produced by the primordial magnetic fields themselves through the Schwinger effect, and derive additional conditions for the survival of the primordial fields.
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