On the similarity between Kerr-Newman black holes (charged and spinning “black 0-branes”) and elementary particles (sigma-model 0-branes) like electrons.
Historical precursor discussion on the possibility of geometrodynamics for fundamental particles:
Seminal observation that the gyromagnetic ratio of the Kerr-Newman black hole is 2, just as the for electron (cf. at anomalous magnetic moment):
Brandon Carter, p. 1562 of: Global Structure of the Kerr Family of Gravitational Fields, Phys. Rev. 174 (1968) 1559 [doi:10.1103/PhysRev.174.1559]
Werner Israel, Source of the Kerr Metric, Phys. Rev. D 2 641 (1970) [doi:10.1103/PhysRevD.2.641]
Further discussion:
Carlos A. López, Extended model of the electron in general relativity, Phys. Rev. D 30 313 (1984) [doi:10.1103/PhysRevD.30.313]
H. I. Arcos, J. G. Pereira: Kerr–Newman Solution as a Dirac Particle, General Relativity and Gravitation 36 (2004) 2441–2464 [doi:10.1023/B:GERG.0000046832.71368.a5, arXiv:hep-th/0210103]
Alexander Burinskii, The Dirac-Kerr-Newman electron, Gravit. Cosmol. 14 (2008) 109–122 [doi:10.1134/S0202289308020011, arXiv:hep-th/0507109]
Alexander Burinskii, Kerr–Newman electron as spinning soliton, International Journal of Modern Physics A 29 26, 1450133 (2014) [doi:10.1142/S0217751X14501334, arXiv:1410.2888]
See also:
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