Ruyant, Quentin Joel MarieGuay, Alexandre2024-04-162024-04-162024-04-12Ruyant, Q., Guay, A. Lagrangian possibilities. Synthese 203, 125 (2024). https://doi.org/10.1007/s11229-024-04550-x0039-785710.1007/s11229-024-04550-xhttps://hdl.handle.net/20.500.14352/103132Financiación en Acceso Abierto gracias al convenio CRUE-CSIC con Springer Nature.Natural modalities are often analysed from an abstract point of view where they are associated with putative laws of nature. However, the way possibilities are represented in physics is more complex. Lagrangian mechanics, for instance, involves two different layers of modalities: kinematical and dynamical possibilities. This paper examines the status of these two layers, both in the classical and quantum case. The quantum case is particularly problematic: we identify four possible interpretive options. The upshot is that a close inspection of the way possibilities are represented in physics could lead to new ways of thinking about natural modalities.engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/journal article1573-0964https://link.springer.com/article/10.1007/s11229-024-04550-xopen access001.1Lagrangian mechanicsModalitiesLaws of natureFeynam path integralKinematic possibilitiesFilosofía de la Ciencia7205.04 Filosofía de la Física