How Efficient Is The Langacker-Pi Mechanism of Monopole Annihilation?

Abstract

We investigate the dynamics of monopole annihilation by the Langacker-Pi mechanism. We find taht considerations of causality, flux-tube energetics and the friction from Aharonov-Bohm scatteering suggest that the monopole annihilation is most efficient if electromagnetism is spontaneously broken at the lowest temperature ($T_{em}\approx 10^{6}GeV$) consistent with not having the monopoles dominate the energy density of the universe.

10 pages

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