ADDENDUM: Semiclassical corrections to the metric of multiple cosmic strings

Details ADDENDUM: Semiclassical corrections to the metric of multiple cosmic strings ADDENDUM: Semiclassical corrections to the metric of multiple cosmic strings

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998cqgra..15.3937a&link_type=abstract

Classical and Quantum Gravity, Volume 15, Issue 12, pp. 3937-3940 (1998).

Physics

3

Scientific paper

In the framework of semiclassical approach to quantum gravity we calculate the first order in 0264-9381/15/12/020/img6 corrections to the metric around N parallel static, straight-line cosmic strings due to the back-reaction effects of massless quantized fields propagating in the multi-conical spacetime. The Einstein field equations which as a source in the right-hand side involve the vacuum average of the energy - momentum tensor of massless scalar, electromagnetic and spinor fields are solved perturbatively. We show that the semiclassical metric is no longer locally flat, there is a `Newtonian-like' potential which results in an attractive, or repulsive, gravitational force near multiple cosmic strings.

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