Magnetic monopoles and evaporating black holes

Astronomy and Astrophysics – Astronomy

Scientific paper

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Black Holes (Astronomy), Elementary Particle Interactions, Gravitation Theory, Magnetic Monopoles, Unified Field Theory, Baryons, Electric Charge, Evaporation, Particle Mass

Scientific paper

It is shown that the existence of heavy magnetic monopoles may have important effects on the evaporation of small-mass black holes via the Hawking process. In particular, the existence of heavy magnetic monopoles makes possible the existence of stable (over 10 billon yrs) zero-temperature black holes with masses greater than about 150 (10 to the 17th GeV/mu) squared g, where mu is the mass of the lightest monopole. It does not appear likely that most 10 to the 15th g initial-mass black holes will have large enough magnetic charges to stabilize them, but this conclusion depends on the details of the first 10 to the -24th sec in the history of the universe. Such long-lived small holes will exist in the late universe if there is at least one monopole per 10 to the 50th baryons in the universe.

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