Note on Legendre decomposition of the Pontryagin density in Kerr
@article{Stein2014NoteOL, title={Note on Legendre decomposition of the Pontryagin density in Kerr}, author={Leo C. Stein}, journal={arXiv: General Relativity and Quantum Cosmology}, year={2014} }
In arXiv:1406.0957v1 ("Scalar field excited around a rapidly rotating black hole in Chern-Simons modified gravity"), Konno and Takahashi have recently developed some analytical results for the scalar field about a Kerr black hole in the decoupling limit of dynamical Chern-Simons gravity. This involved a decomposition of the source (the Pontryagin density) in terms of Legendre polynomials. Here we give a two-line expression for this decomposition which simplifies their quadruple sum. Our…
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