We derive exact expressions for the scalar and electromagnetic self-forces and self-torques
acting on arbitrary static extended bodies in arbitrary static spacetimes with any number of
dimensions. Nonperturbatively, our results are identical in all dimensions. Meaningful point
particle limits are quite different in different dimensions, however. These limits are defined
and evaluated, resulting in simple “regularization algorithms” which can be used in concrete
calculations. In these limits, self-interaction is shown to be progressively less important in …

I will present exact expressions for the scalar and electromagnetic self-forces and self-
torques acting on arbitrary static extended bodies in arbitrary static spacetimes with any
number of dimensions. Non-perturbatively, these results are identical in all dimensions.
Meaningful point particle limits are quite different, however. I will discuss how such limits are
defined and evaluated, resulting in simple``regularization algorithms''which can be used in
concrete calculations. In them, self-interaction is shown to be progressively less important in …