Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-11-14
Phys. Lett. B682:89-92,2009
Physics
High Energy Physics
High Energy Physics - Theory
Scientific paper
10.1016/j.physletb.2009.10.089
The dynamics of test particles in $f(\mathcal G)$ modified Gauss-Bonnet gravity is investigated. It is shown that in $f({\mathcal G})$ gravity models with non-minimal coupling to matter, particles experience an extra force normal to their four-velocities and as a result move along non- geodesic world-lines. The explicit form of the extra force depends on the function of the Gauss-Bonnet term included in coupling term. The effects of this force on the relative accelerations of particles are studied.
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