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Paper   IPM / Physic / 12705
School of Physics
  Title:   Test Particle Motion in Modified Gravity Theories
  Author(s):  M. Roshan
  Status:   Published
  Journal: Phys. Rev. D
  Vol.:  87
  Year:  2013
  Pages:   044005
  Supported by:  IPM
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(MOG).

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