Exact solutions inU 4 gravity. I. The ansatz for self double dual curvature

Details Exact solutions inU 4 gravity. I. The ansatz for self double dual curvature Exact solutions inU 4 gravity. I. The ansatz for self double dual curvature

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gregr..23..623w&link_type=abstract

General Relativity and Gravitation, Volume 23, Issue 6, pp.623-639

Mathematics

Logic

3

Scientific paper

We investigate the energy-momentum and spin field equations of gravity theory on a Riemann-Cartan space-time (including metric and torsion,U 4-manifold). The structure of the rather complicated nonlinear differential equations of second order is made considerably easier to survey by decomposing curvature into its self and anti-self double dual parts. This leads to an obvious ansatz for the self double dual curvature, whereby the field equations are reduced to Einstein's equations with cosmological term. To solve the double dual ansatz, we choose proper variables adopted to its double duality, and perform a (3+1)-decomposition of exterior calculus. We examine these equations further on a Kerr background with cosmological constant for the Riemannian geometry.

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