Black holes in magnetic monopoles

Details Black holes in magnetic monopoles Black holes in magnetic monopoles

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991stin...9217377l&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Black Holes (Astronomy), Gauge Theory, Gravitation, Magnetic Monopoles, Reissner-Nordstrom Solution, Vacuum

Scientific paper

We study magnetically charged classical solutions of a spontaneously broken gauge theory interacting with gravity. We show that nonsingular monopole solutions exist only if the Higgs field vacuum expectation value v is less than or equal to a critical value vcr, which is of the order of the Planck mass. In the limiting case, the monopole becomes a black hole, with the region outside the horizon described by the critical Reissner-Nordstrom solution. For v less than vcr, we find additional solutions which are singular at f = 0, but which have this singularity hidden within a horizon. These have nontrivial matter fields outside the horizon, and may be interpreted as small black holes lying within a magnetic monopole. The nature of these solutions as a function of v and of the total mass M and their relation to the Reissner-Nordstrom solutions is discussed.

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