Test particle motion in modified gravity theories

Oct, 2012
9 pages
Published in:
  • Phys.Rev.D 87 (2013) 4, 044005
  • Published: Feb 4, 2013
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Abstract: (APS)
We derive the equations of motion of an electrically neutral test particle for modified gravity theories for which the covariant divergence of the ordinary matter energy-momentum tensor does not vanish (i.e., ∇μTμν≠0). In fact, we generalize the Mathisson-Papapetrou equations by deriving a general form for the equations of motion of a test particle. Furthermore, using the generalized Mathisson-Papapetrou equations, we investigate the equations of motion of a pole-dipole (spinning) particle in the context of modified gravity.
Note:
  • 15 pages
  • 04.50.Kd
  • 04.20.-q
  • 95.35.+d