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Multipole solutions in metric--affine gravity

Research paper by José Socorro, Claus Lämmerzahl, Alfredo Macías, Eckehard W. Mielke

Indexed on: 23 Apr '98Published on: 23 Apr '98Published in: General Relativity and Quantum Cosmology



Abstract

Above Planck energies, the spacetime might become non--Riemannian, as it is known fron string theory and inflation. Then geometries arise in which nonmetricity and torsion appear as field strengths, side by side with curvature. By gauging the affine group, a metric affine gauge theory emerges as dynamical framework. Here, by using the harmonic map ansatz, a new class of multipole like solutions in the metric affine gravity theory (MAG) is obtained.