The Post-Minkowskian Limit of f(R)-gravity

We formally discuss the post-Minkowskian limit of f ( R )-gravity without adopting conformal transformations but developing all the calculations in the original Jordan frame. It is shown that such an approach gives rise, in general, together with the standard massless graviton, to massive scalar mod...

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Bibliographic Details
Published in:International journal of theoretical physics 2010-06, Vol.49 (6), p.1251-1261
Main Authors: Capozziello, Salvatore, Stabile, Arturo, Troisi, Antonio
Format: Article
Language:English
Subjects:
Elementary Particles
Mathematical and Computational Physics
Physics
Physics and Astronomy
Quantum Field Theory
Quantum Physics
Theoretical
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Summary:We formally discuss the post-Minkowskian limit of f ( R )-gravity without adopting conformal transformations but developing all the calculations in the original Jordan frame. It is shown that such an approach gives rise, in general, together with the standard massless graviton, to massive scalar modes whose masses are directly related to the analytic parameters of the theory. In this sense, the presence of massless gravitons only is a peculiar feature of General Relativity. This fact is never stressed enough and could have dramatic consequences in detection of gravitational waves. Finally the role of curvature stress-energy tensor of f ( R )-gravity is discussed showing that it generalizes the so called Landau-Lifshitz tensor of General Relativity. The further degrees of freedom, giving rise to the massive modes, are directly related to the structure of such a tensor.
ISSN:0020-7748
1572-9575
DOI:10.1007/s10773-010-0307-4