Accioly, Antonio [UNESP]HelayËl-Neto, JoséLobo, Matheus [UNESP]2014-05-272014-05-272008-08-10Modern Physics Letters A, v. 23, n. 24, p. 1999-2009, 2008.0217-7323http://hdl.handle.net/11449/70528The 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.1999-2009engAnti-gravitational forceGravitational forceLinearized higher-derivative gravityStraight cosmic stringArtigo10.1142/S0217732308026145Acesso restrito2-s2.0-50949122565