Hamiltonian Relativistic Two-Body Problem: Center of Mass and Orbit Reconstruction

Details Hamiltonian Relativistic Two-Body Problem: Center of Mass and Orbit Reconstruction Hamiltonian Relativistic Two-Body Problem: Center of Mass and Orbit Reconstruction

2006-10-17

arxiv.org/abs/hep-th/0610200v3

J.Phys.A40:9585-9608,2007

Physics

High Energy Physics

High Energy Physics - Theory

47 pages - minor changes

Scientific paper

10.1088/1751-8113/40/31/029

After a short review of the history and problems of relativistic Hamiltonian mechanics with action-at-a-distance inter-particle potentials, we study isolated two-body systems in the rest-frame instant form of dynamics. We give explicit expressions of the relevant relativistic notions of center of mass, we determine the generators of the Poincare' group in presence of interactions and we show how to do the reconstruction of particles' orbits from the relative motion and the canonical non-covariant center of mass. In the case of a simple Coulomb-like potential model, it is possible to integrate explicitly the relative motion and show the two dynamical trajectories.

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