Abstract

In the framework of Poincaré gauge field theory, we show that a certain quadratic lagrangian has three limits: (1) a weak-field limit with a newtonian and a “confinement” potential, (2) a general relativistic limit including the Schwarzschild solution, and (3) the unphysical limit of a riemannian model of spacetime with a curvature-square lagrangian.

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