Comment on ``Perturbative Method to solve fourth-order Gravity Field Equations"

Details Comment on ``Perturbative Method to solve fourth-order Gravity Field Equations" Comment on ``Perturbative Method to solve fourth-order Gravity Field Equations"

1995-06-22

arxiv.org/abs/gr-qc/9506045v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, Revtex

Scientific paper

We reconsider the cosmic string perturbative solution to the classical fourth-order gravity field equations, obtained in Ref.\cite{CLA94}, and we obtain that static, cylindricaly symmetric gauge cosmic strings, with constant energy density, can contain only $\beta$-terms in the first order corrections to the interior gravitational field, while the exact exterior solution is a conical spacetime with deficit angle $D=8\pi\mu$.

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