%0 Journal Article
%A Ruiz Ruiz, Fernando
%A Gibbons, G.W.
%A Ortiz, M.E.
%T Stringy cosmic strings with horizons
%D 1990
%@ 0370-2693
%U https://hdl.handle.net/20.500.14352/59055
%X 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.
%~