Geodesic
On the minimal size of particles in the general theory of relativity
Teoretičeskaâ i matematičeskaâ fizika, Tome 13 (1972) no. 1, pp. 41-61 Cet article a éte moissonné depuis la source Math-Net.Ru

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The question of the minimal size of particles in general relativity is considered. It is shown that a neutral particle's mass vanishes when its size tends to zero. But a point limit is impossible for an electrically charged particle. The minimal size of a particle allowed by its charge is discussed, and it is shown that a point limit is impossible in Papapetrou's model. In Euclidean space, the introduction of an extension of particles violates causality; it is shown that the extension that arises in general relativity does not. Another question discussed is this: is the total (inert) mass's being equal to the gravitating mass a condition under which the gravitational interaction has a regularizing effect? 
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M. A. Markov; V. P. Frolov. On the minimal size of particles in the general theory of relativity. Teoretičeskaâ i matematičeskaâ fizika, Tome 13 (1972) no. 1, pp. 41-61. http://geodesic.mathdoc.fr/item/TMF_1972_13_1_a1/

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