Physics – Mathematical Physics
Scientific paper
2009-07-17
J.Phys.A: Math. Gen. 37 (2004), 1079-1091
Physics
Mathematical Physics
18 pages, 3 figures
Scientific paper
10.1088/0305-4470/37/3/035
A self-action problem for a point-like charged particle arbitrarily moving in flat space-time of six dimensions is considered. A consistent regularization procedure is proposed which relies on energy-momentum and angular momentum balance equations. Structure of the angular momentum tensor carried by the retarded "Li\'enard-Wiechert" field testifies that a point-like source in six dimensions possesses an internal angular momentum. Its magnitude is proportional to the square of acceleration. It is the so-called {\em rigid} relativistic particle; its motion is determinated by the higher-derivative Lagrangian depending on the curvature of the world line. It is shown that action functional contains, apart from usual "bare" mass, an additional renormalization constant which corresponds to the magnitude of "bare" internal angular momentum of the particle.
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