Stringy Cosmic Strings With Horizons
Feb 12, 19905 pages
Published in:
- Phys.Lett.B 240 (1990) 50-54
- Published: 1990
Report number:
- DAMTP-R-89-20
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Abstract: (Elsevier)
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.- astrophysics: string
- space-time: horizon
- field equations: solution
- sigma model
- coupling: gravitation
- gravitation: coupling
- group theory: modular
- field theory: scalar
- Einstein equation
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