Article ID Journal Published Year Pages File Type
10725947 Physics Letters B 2008 4 Pages PDF
Abstract
We consider general metric f(R) theories of gravity by solving the field equations in the presence of a spherical static mass distribution by analytical perturbative means. Expanding the field equations systematically in O(G), we solve the resulting set of equations and show that f(R) theories which attempt to solve the dark energy problem very generally lead to γPPN=1/2 in the solar system. This excludes a large class of theories as possible explanations of dark energy. We also present the first order correction to γPPN and show that it cannot have a significant effect.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics
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