Classical Scattering in 2+1 Gravity with N Spinning Sources

Details Classical Scattering in 2+1 Gravity with N Spinning Sources Classical Scattering in 2+1 Gravity with N Spinning Sources

1991-10-07

arxiv.org/abs/hep-th/9110020v1

Phys.Lett. B273 (1991) 431-437

Physics

High Energy Physics

High Energy Physics - Theory

11 pages

Scientific paper

10.1016/0370-2693(91)90294-Z

The classical dynamics of N spinning point sources in 2+1 Einstein-Cartan gravity is considered. It corresponds to the ISO(2,1) Chern-Simons theory, in which the torsion source is restricted to its intrinsic spin part. A class of explicit solutions is found for the dreibein and the spin connection, which are torsionless in the spinless limit. By using the residual local Poincare' invariance of the solutions, we fix the gauge so that the metric is smooth outside the particles and satisfies proper asymptotic conditions at space and time infinity. We recover previous results for test bodies and find new ones for the scattering of two dynamical particles in the massless limit.

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