Light deflection and quadratic gravity
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Editrice Compositori Bologna
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Abstract
We study the bending of light caused by a static gravitational field generated by a localized material source in the context of quadratic gravity. Our calculation shows that for light rays passing close to the Sun the deflection Phi lies in the interval 0 < <Phi> < 1.75<double prime>. A tree-level approach to the same issue tells us that the vacuum concerning quadratic gravity is a dispersive medium. Nom Phi is energy dependent and ranges from 0(+) to 1.75(-) arcsec.
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English
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Nuovo Cimento Della Societa Italiana Di Fisica B-general Physics Relativity Astronomy and Mathematical Physics and Methods. Siena: Editrice Compositori Bologna, v. 115, n. 10, p. 1235-1239, 2000.
