Non-vacuum twisting type N metrics

Details Non-vacuum twisting type N metrics Non-vacuum twisting type N metrics

2000-07-10

arxiv.org/abs/gr-qc/0007017v1

Class.Quant.Grav. 18 (2001) 341-351

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Scientific paper

A maximally reduced system of equations corresponding to the twisting type N Einstein metrics is given. When the cosmological constant $\lambda\to 0$ they reduce to the standard equations for the vacuum twisting type N's. All the metrics which are conformally equivalent to the twisting type N metrics and which admit 3-dimensional conformal group of symmetries are presented. In the Feferman class of metrics an example is given of a twisting type N metric which satisfies Bach's equations but is not Einstein.

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