Abstract
When a typical grand unified theory (GUT) is considered in the context of standard cosmology, one is led immediately to the conclusion that far too many magnetic monopoles would have been produced in the very early history of the universe.1,2 In this talk I will discuss two possible mechanisms which might suppress monopole production. The first is the idea of a high temperature superconductor, as proposed by Langacker and Pi.3 The second is the inflationary universe.4,5,6 Befitting my biases, I will devote most of my time to the latter.
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References
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Since the Magnetic Monopole Workshop, A. S. Goldhaber, S.-Y. Pi and I have begun to think about the production of magnetic monopoles during the early stages of inflation, while ϕ ≈ x. At this time magnetic monopoles are relatively light, and can be produced abundantly. These monopoles are then diluted by the subsequent expansion, but we think that a conceivably observable flux of monopoles could remain. (The possibility that monopoles could be produced in this way was suggested by M. S. Turner.)
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Guth, A.H. (1983). Reducing the Monopole Abundance. In: Carrigan, R.A., Trower, W.P. (eds) Magnetic Monopoles. NATO Advanced Science Institutes Series, vol 102. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-7370-8_5
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