Polarization modes of gravitational waves in three-dimensional massive gravities

Details Polarization modes of gravitational waves in three-dimensional massive gravities Polarization modes of gravitational waves in three-dimensional massive gravities

2011-11-09

arxiv.org/abs/1111.2196v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages, 1 figure

Scientific paper

We find polarization modes of gravitational waves in topologically massive and new massive gravities by using the Newman-Penrose formalism where the null real tetrad is necessary to specify gravitational waves. The number of polarization modes is two for the new massive gravity and one for the topologically massive gravity, which is consistent with the metric-perturbation approach.

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