Thermal production of superheavy magnetic monopoles in the early universe

Details Thermal production of superheavy magnetic monopoles in the early universe Thermal production of superheavy magnetic monopoles in the early universe

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phlb..115...95t&link_type=abstract

Physics Letters B, Volume 115, Issue 2, p. 95-98.

Physics

32

Scientific paper

Starting with an initial abundance of zero, we calculate the thermal production of magnetic monopoles by using the monopole-antimonopole annihilation cross section and detailed balance. The final abundance of monopoles depends exponentially upon m/Ti; m is the monopole mass ~1016 GeV and Ti is the temperature when production commences. For m/Ti ~35-55 the present monopole to photon ratio is nM/nγ~10-23-10-38, less than the bound derived from the present mass density, but possibly large enough to be detected. This calculation provides a lower bound on the monopole abundance for a given m/Ti.

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