Stringy cosmic strings with horizons

Details Stringy cosmic strings with horizons Stringy cosmic strings with horizons

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phlb..240...50g&link_type=abstract

Physics Letters B, Volume 240, Issue 1-2, p. 50-54.

Physics

14

Scientific paper

It is shown that any sigma model coupled to gravity with a target space having closed geodesics admits singular cosmic string solutions with event horizons. We also prove that if one makes the general assumption of boost symmetric sources, non-singular solutions of this type cannot exist. The case of the target manifold being the fundamental domain of the modular group PSL(2,¢Z) is discussed in detail.
CSIC (Spain) Fellow.

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