Generalized electromagnetic energy-momentum tensor and scalar curvature   of space at the location of charged particle
  We consider the Einstein equation, where the common electromagnetic energy momentum tensor is replaced by its generalized equivalent as suggested in our earlier paper (A.L. Kholmetskii et al. Phys. Scr. 83, 055406 (2011)). Now we show that with this new electromagnetic energy-momentum tensor, the scalar curvature at the location of charges is significantly altered in comparison with the common result, and it even may change its sign. Some implications of the obtained results are discussed. 
A. L. Kholmetskii, O. V. Missevitch and T. Yarman
physics.class-ph