MODERN PHYSICS LETTERS A, cilt.13, sa.38, ss.3081-3090, 1998 (SCI-Expanded)
We extend the work done for cosmic strings on the perturbative calculation of vacuum polarization of a massless field in the space-time of multiple cosmic strings and show that for a more general class of locally flat metrics, the one-loop calculation does not introduce any new divergences to the vev of the energy of a scalar particle or a spinor particle.