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We explore some particle physics implications of the growing evidence for a helical primordial magnetic field (PMF). From the interactions of magnetic monopoles and the PMF, we derive an upper

We explore some particle physics implications of the growing evidence for a helical primordial magnetic field (PMF). From the interactions of magnetic monopoles and the PMF, we derive an upper bound on the monopole number density, nðt0Þ < 1 × 10−20 cm−3, which is a “primordial” analog of the Parker bound for the survival of galactic magnetic fields. Our bound is weaker than existing constraints, but it is derived under independent assumptions. We also show how improved measurements of the PMF at different redshifts can lead to further constraints on magnetic monopoles.

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Date Created
  • 2015-05-20
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  • Text
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    Identifier
    • Digital object identifier: 10.1103/PhysRevD.91.103522
    • Identifier Type
      International standard serial number
      Identifier Value
      2470-0029
    • Identifier Type
      International standard serial number
      Identifier Value
      2470-0010
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    Long, Andrew J., & Vachaspati, Tanmay (2015). Implications of a primordial magnetic field for magnetic monopoles, axions, and Dirac neutrinos. PHYSICAL REVIEW D, 91(10), 0-0. http://dx.doi.org/10.1103/PhysRevD.91.103522

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