Radiation reaction in various dimensions

Details Radiation reaction in various dimensions Radiation reaction in various dimensions

2001-12-12

arxiv.org/abs/hep-th/0112110v1

Phys.Rev. D66 (2002) 025016

Physics

High Energy Physics

High Energy Physics - Theory

Latex, 8 pages

Scientific paper

10.1103/PhysRevD.66.025016

We discuss the radiation reaction problem for an electric charge moving in flat space-time of arbitrary dimensions. It is shown that four is the unique dimension where a local differential equation exists accounting for the radiation reaction and admitting a consistent mass-renormalization (the Dirac-Lorentz equation). In odd dimensions the Huygens principle does not hold; as a result, the radiation reaction force depends on the whole past history of a charge (radiative tail). We show that the divergence in the tail integral can be removed by the mass renormalization only in the 2+1 theory. In even dimensions higher than four, divergences can not be removed by a renormalization.

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