We examine the relation between the deficit angle and the mass per unit length of a cosmic string. In the weak-field approximation. In general we define a correction term by ()-1. We show that depends on the gravitational strength of the string, but is independent of the thickness of the string. Taking the zero-thickness limit we obtain an infinitely thin string for which. The implications of this result for the treatment of strings as singular line sources in general relativity is discussed.
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)