caa a22 4500 605495947 CHVBK 20210128100533.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10231-013-0374-2 doi (NATIONALLICENCE)springer-10.1007/s10231-013-0374-2 Massless particles in generalized Robertson-Walker 4-spacetimes [Elektronische Daten] [M. Cañadas-Pinedo, M. Gutiérrez, M. Ortega] The model of massless relativistic particle relying in a curvature-dependent action functional is considered in the framework of generalized Robertson-Walker 4-spacetimes. The discussion is based on the number of nonvanishing Frenet curvatures, and we obtain characterizations, examples, and nonexistence results for the critical points of the action functional, which are included in the fibers. Fondazione Annali di Matematica Pura ed Applicata and Springer-Verlag Berlin Heidelberg, 2013 Action functional nationallicence Total curvature nationallicence Massless relativistic particle nationallicence Frenet curvatures nationallicence Generalized Robertson-Walker spacetimes nationallicence Cañadas-Pinedo M. Dto. Álgebra, Geometría y Topología, Universidad de Málaga, 29071, Málaga, Spain aut Gutiérrez M. Dto. Álgebra, Geometría y Topología, Universidad de Málaga, 29071, Málaga, Spain aut Ortega M. Dto. Geometría y Topología, Universidad de Granada, 18071, Granada, Spain aut Annali di Matematica Pura ed Applicata (1923 -) Springer Berlin Heidelberg 194/1(2015-02-01), 259-273 0373-3114 194:1<259 2015 194 10231 https://doi.org/10.1007/s10231-013-0374-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10231-013-0374-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cañadas-Pinedo M. Dto. Álgebra, Geometría y Topología, Universidad de Málaga, 29071, Málaga, Spain aut NATIONALLICENCE 700 1- Gutiérrez M. Dto. Álgebra, Geometría y Topología, Universidad de Málaga, 29071, Málaga, Spain aut NATIONALLICENCE 700 1- Ortega M. Dto. Geometría y Topología, Universidad de Granada, 18071, Granada, Spain aut NATIONALLICENCE 773 0- Annali di Matematica Pura ed Applicata (1923 -) Springer Berlin Heidelberg 194/1(2015-02-01), 259-273 0373-3114 194:1<259 2015 194 10231