Effective Einsteinian gravity from Poincare gauge field theory
Abstract
The Poincare gauge theory of gravity should apply in the microphysical domain. This paper investigates its implications for macrophysics. Weakly self double dual RiemannCartan curvature is assumed throughout. It is shown that the metrical background is then determined by Einstein's field equations with the BelinfanteRosenfeld symmetrized energymomentum current amended by spin squared terms. Moreover, the effective cosmological constant can be reconciled with the empirical data by absorbing the corresponding constant curvature part into the dynamical torsion of recently found exact solutions. Macroscopically this extra torsion remains undetectable.
 Publication:

Physics Letters A
 Pub Date:
 January 1986
 DOI:
 10.1016/03759601(86)901222
 Bibcode:
 1986PhLA..113..471B
 Keywords:

 Gauge Theory;
 Gravitation Theory;
 Relativity;
 Unified Field Theory;
 Cartan Space;
 Cosmology;
 Poincare Problem;
 Riemann Manifold;
 YangMills Theory;
 Physics (General)