The Newman-Penrose formalism in quadratic gravity

Abstract

The quadratic gravity constraints are reformulated in terms of the Newman-Penrose-like quantities. In such a frame language, the field equations represent a linear algebraic system for the Ricci tensor components. In principle, a procedure for the combination of the Ricci components with standard geometric identities can be applied in a similar way as in the case of general relativity. These results could serve in various subsequent analyses and physical interpretations of admitted solutions to quadratic gravity. Here, we demonstrate the utility of such an approach by explicitly proving general propositions restricting the spacetime geometry under assumptions on a specific algebraic type of curvature tensors.

25 pages, to be submitted

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Cited by in corpus (4)

• Newman-Penrose formalism and exact vacuum solutions to conformal Weyl gravity
• Testing gravity with gauge-invariant polarization states of gravitational waves: Theory and pulsar timing sensitivity
• Linear perturbations of Kerr black hole in quadratic gravity
• The Exterior Calculus of Quadratic Gravity