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Lie algebra expansions and actions for non-relativistic gravity Bergshoeff, Eric Izquierdo Rodríguez, José Manuel Ortín, Tomás Romano, Luca Classical Theories of Gravity Space-Time Symmetries Chern-Simons Theories Effective Field Theories We show that the general method of Lie algebra expansions can be applied to re-construct several algebras and related actions for non-relativistic gravity that have occurred in the recent literature. We explain the method and illustrate its applications by giving several explicit examples. The method can be generalized to include ultra-relativistic gravity and non-relativistic supergravity as well. 2020-05-16T11:07:01Z 2020-05-16T11:07:01Z 2019 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Journal of High Energy Physics, 2019, vol. 2019, 48 http://uvadoc.uva.es/handle/10324/40863 10.1007/JHEP08(2019)048 8 Journal of High Energy Physics 2019 1029-8479 eng https://link.springer.com/article/10.1007/JHEP08(2019)048 Atribución 4.0 Internacional info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ application/pdf Springer https://uvadoc.uva.es/bitstream/10324/40863/4/lie-algebra-expansions-actions-non-relativistic-gravity.pdf.jpg Hispana TEXT https://creativecommons.org/licenses/by/4.0/ UVaDOC. Repositorio Documental de la Universidad de Valladolid http://uvadoc.uva.es/handle/10324/40863