Weak-field gravity of circular cosmic strings
Hughes, Shane J.
Mcmanus, Des J.
Vandyck, Michel A.
American Physical Society
A weak-field solution of Einstein's equations is constructed. It is generated by a circular cosmic string externally supported against collapse. The solution exhibits a conical singularity, and the corresponding deficit angle is the same as for a straight string for the same linear energy density. This confirms the deficit-angle assumption made in the Frolov-Israel-Unruh derivation of the metric describing a string loop at a moment of time symmetry.
Gravitational radiation , Vacuum strings , Domain walls
Hughes, S. J., McManus, D. J. and Vandyck, M. A. (1993) 'Weak-field gravity of circular cosmic strings', Physical Review D, 47(2), 468-473 (6pp). doi: 10.1103/PhysRevD.47.468
© 1993, American Physical Society