paper

PP-waves with torsion and metric-affine gravity

arXiv:gr-qc/0505157 · doi:10.1088/0264-9381/22/19/010

Abstract

A classical pp-wave is a 4-dimensional Lorentzian spacetime which admits a nonvanishing parallel spinor field; here the connection is assumed to be Levi-Civita. We generalise this definition to metric compatible spacetimes with torsion and describe basic properties of such spacetimes. We use our generalised pp-waves for constructing new explicit vacuum solutions of quadratic metric-affine gravity.

17 pages, LaTeX2e

PP-waves with torsion and metric-affine gravity · wovepaper