Browsing DMat-Artículos, capítulos... by Author "22443123-189a-4461-90e9-831beaca0089"
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Galilean Generalized Robertson-Walker spacetimes: a new family of Galilean geometrical models
Fuente, Daniel de la; Rubio, Rafael M. (American Institute of Physics, 2018)We introduce a new family of Galilean spacetimes, the Galilean generalized Robertson-Walker spacetimes. This new family is relevant in the context of a generalized Newton-Cartan theory. We study its geometrical structure ... -
Infinitesimal relative position vector fields for observers in a reference frame and applications to conformally stationary spacetimes
Caballero, Magdalena; Fuente, Daniel de la; Rubio, Rafael (Springer, 2019)We introduce and analyze the concept of infinitesimal relative position vector field between “infinitesimally nearby” observers, showing the equivalence between different definitions. Through the Fermi–Walker derivative ... -
Stability of maximal hypersurfaces in spacetimes: new general conditions and application to relevant spacetimes
Fuente, Daniel de la; Rubio, Rafael M.; Salamanca, Juan J. (Springer, 2017)We obtain new simple sufficient conditions to ensure the stability and strong stability of maximal hypersurfaces (without boundary) immersed in an arbitrary spacetime. Several applications to maximal hypersurfaces in a ...