Field theory on curved noncommutative spacetimes.
Finsler cases of GF-space.
Foliations of lightlike hypersurfaces and their physical interpretation
This paper deals with a family of lightlike (null) hypersurfaces (H u) of a Lorentzian manifold M such that each null normal vector ℓ of H u is not entirely in H u, but, is defined in some open subset of M around H u. Although the family (H u) is not unique, we show, subject to some reasonable condition(s), that the involved induced objects are independent of the choice of (H u) once evaluated at u = constant. We use (n+1)-splitting Lorentzian manifold to obtain a normalization of ℓ and a well-defined...
Fonctions de Mathieu et fonctions propres de l'oscillateur relativiste
Formulazione intrinseca del problema di Cauchy in relatività generale
Viene stabilita una formulazione intrinseca del problema di Cauchy in Relatività generale, per uno spazio-tempo riemanniano descritto da un mezzo continuo globale e non-polare. In termini di variabili proprie: metrica, velocità angolare e di deformazione, densità di pura materia, flusso termico e temperatura. Vengono altresì precisate le condizioni iniziali per i dati di Cauchy su una assegnata superficie spaziale ; condizioni in involuzione nel senso d'E. Cartan, le quali mettono in evidenza,...
Formulazione relativa delle leggi di evoluzione di un sistema continuo in relatività generale. Nota II
Formulazione relativa delle leggi di evoluzione di un sistema continuo in relatività generale
Fourier Mukai transforms and applications to string theory.
El artículo es una introducción a la transformación de Fourier-Mukai y sus aplicaciones a varios problemas de móduli, teoría de cuerdas y simetría "mirror". Se desarrollan los fundamentos necesarios para las transformaciones de Fourier-Mukai, entre ellos las categorías derivadas y los functores integrales. Se explican además sus versiones relativas, que se necesitan para precisar la noción de T-dualidad fibrada en variedades de Calabi-Yau elípticas de dimensión tres. Se consideran también varias...
Fractional flux and non-normal diffusion.
Fuchsian groups and uniformization of Hurwitz spaces.
Gauge symmetries of an extended phase space for Yang-Mills and Dirac fields
General relativistic celestial mechanics of binary systems. I. The post-newtonian motion
General relativistic celestial mechanics of binary systems. II. The post-newtonian timing formula
General relativity at the turn of the third millennium.
Generalized geodesic deviations: a Lagrangean approach
The geodesic deviation equations, called also the Jacobi equations, describe only the first-order effects, linear in the small parameter characterizing the deviation from an original worldline. They can be easily generalized if we take into account the higher-order terms. Here we derive these higher-order equations not only directly, but also from the Taylor expansion of the variational principle itself. Then we show how these equations can be used in a novel approach to the two-body problem in...
Generalized-Finslerian connection coefficients for the static spherically symmetric space.
Generating series and asymptotics of classical spin networks
We study classical spin networks with group SU. In the first part, using Gaussian integrals, we compute their generating series in the case where the edges are equipped with holonomies; this generalizes Westbury’s formula. In the second part, we use an integral formula for the square of the spin network and perform stationary phase approximation under some non-degeneracy hypothesis. This gives a precise asymptotic behavior when the labels are rescaled by a constant going to infinity.
Geometric dynamics of calcium oscillations ODEs systems.
Geometrical and topological structure of magnetic fields generated by rectilinear wires.
Geometrical background for the unified field theories : the Einstein-Cartan theory over a principal fibre bundle