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paper

Axion Isocurvature and Magnetic Monopoles

arXiv:1511.06347 · doi:10.1103/PhysRevLett.116.141803

Abstract

We propose a simple mechanism to suppress axion isocurvature fluctuations using hidden sector magnetic monopoles. This allows for the Peccei-Quinn scale to be of order the unification scale consistently with high scale inflation.

13 pages