Lagrangians for nonrelativistic gravity

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Authors	NOVOSAD Patrik
Year of publication	2022
Type	Article in Periodical
Magazine / Source	Physical review D
MU Faculty or unit	Faculty of Science
Citation
Web	https://arxiv.org/pdf/2112.12648.pdf https://journals.aps.org/prd/abstract/10.1103/PhysRevD.105.064051
Doi	http://dx.doi.org/10.1103/PhysRevD.105.064051
Keywords	Einstein-Hilbert; relativity
Description	We study the covariant expansion of Einstein-Hilbert action in powers of 1/c2, where c is the speed of light. We assume arbitrary spacetime foliation, i.e., we separate the tangent index into two groups, which depend on generic n. This is done first by suitable parametrization of geometry which is called "pre-nonrelativistic" parametrization. This allows us to rewrite the general relativity in a form suitable for the analytical 1/c2 expansion. Consequently, we can study the expansion of Einstein-Hilbert action up to the next-to-next-to-leading order.
Related projects:	Interní grantová agentura Masarykovy univerzity