Do Global String Loops Collapse to Form Black Holes?

Details Do Global String Loops Collapse to Form Black Holes? Do Global String Loops Collapse to Form Black Holes?

1993-05-18

arxiv.org/abs/hep-th/9305081v1

Phys.Lett. B311 (1993) 41-46

Physics

High Energy Physics

High Energy Physics - Theory

10pp, 3 figures available on request, plain TeX (no macros needed), to be published in Phys. Lett. B

Scientific paper

10.1016/0370-2693(93)90530-U

Hawking has shown that the emission of gravitational radiation cannot prevent circular loops of gauged cosmic strings from collapsing into black holes. Here we consider the corresponding question for global strings: can Goldstone boson emission prevent circular loops of global cosmic strings from forming black holes? Our results show that for every value of the string tension there is a certain critical size below which the circular loop does not collapse to form a black hole. For GUT scale strings, this critical size is much larger than the current horizon.

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