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Title: Black holes in magnetic monopoles

Journal Article · · Physical Review, D (Particles Fields); (United States)
;  [1];  [2]
  1. Physics Department, Columbia University, New York, New York 10027 (United States)
  2. Physics Department, Columbia University, New York, New York 10027 (United States) Theory Group and NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)

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 {ital v} is less than or equal to a critical value {ital v}{sub cr}, 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-Nordstroem solution. For {ital v}{lt}{ital v}{sub cr}, we find additional solutions which are singular at {ital r}=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 {ital v} and of the total mass {ital M} and their relation to the Reissner-Nordstroem solutions are discussed.

OSTI ID:
7044581
Journal Information:
Physical Review, D (Particles Fields); (United States), Vol. 45:8; ISSN 0556-2821
Country of Publication:
United States
Language:
English