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Canonical gauge-invariant variables for scalar perturbations in synchronous coordinates

Zdzislaw A. Golda·Andrzej Woszczyna·Karolina Zawada
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Abstract

Under an appropriate change of the perturbation variable Lifshitz-Khalatnikov propagation equations for the scalar perturbation reduce to d'Alembert equation. The change of variables is based on the Darboux transform.

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Zdzislaw A. Golda, Andrzej Woszczyna, Karolina Zawada. 2005-11-08. Canonical gauge-invariant variables for scalar perturbations in synchronous coordinates. https://arxiv.org/abs/gr-qc/0511040

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