Gravitational field of a straight cosmic string in the framework of higher-derivative gravity
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Abstract
The gravitational properties of a straight cosmic string are studied in the linear approximation of higher-derivative gravity. These properties are shown to be very different from those found using linearized Einstein gravity: there exists a short range gravitational (anti-gravitational) force in the nonrelativistic limit; in addition, the deflection angle of a light ray moving in a plane orthogonal to the string depends on the impact parameter. © 2008 World Scientific Publishing Company.
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Anti-gravitational force, Gravitational force, Linearized higher-derivative gravity, Straight cosmic string
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English
Citation
Modern Physics Letters A, v. 23, n. 24, p. 1999-2009, 2008.
