On the relation between the Einstein and the Komar expressions for the energy of the gravitational field
On the relativistic calculation of the Lamb shift
A relativistic calculation of the Lamb shift, using the classical field created by the Dirac transition currents, is proposed.
On the space-time permeated by a viscous, compressible, thermally conducting, self-gravitating fluid with infinite electrical conductivity and constant magnetic permeability
On the topology of spherically symmetric space-times
Spherically symmetric space-times have attained considerable attention ever since the early beginnings of the theory of general relativity. In fact, they have appeared already in the papers of K. Schwarzschild [12] and W. De Sitter [5] which were published in 1916 and 1917 respectively soon after Einstein's epoch-making work [7] in 1915. The present survey is concerned mainly with recent results pertainig to the toplogy of spherically symmetric space-times. Definition. By space-time a connected...
On the validity of Wilson's approach to general relativity
The Wilson scheme and the Einstein dynamics are compared for binary systems. At the second post-Newtonian approximation, genuine two-body aspects are found to differ by up to 114%.
On the wave equation in curved spacetime
On weakly symmetric spacetimes
Onde di discontinuità gravitazionali in relatività generale
Opérateur de diffraction pour le système de Maxwell en métrique de Schwarzschild
Operator equations, separation of variables and relativistic alterations.
Optimal inequalities for embedded space-times
Ordered Manifolds, Invariant Cone Fields, and Semigroups.
Passer au global : le cas d’Élie Cartan, 1922–1930
Après avoir enrichi la notion de connexion entre 1922 et 1925, Élie Cartan jette entre 1925 et 1930 les bases de l’étude topologique et géométrique globale des groupes de Lie et variétés homogènes. Nous voulons montrer que ce passage aux questions globales s’accompagne d’une réorganisation complète, aux niveaux théorique, thématique et rhétorique, autour d’une polarité local / global jusque là absente des travaux de Cartan ; elle remplace, selon nous, une polarité infinitésimal / fini héritée du...
Peano Baker series convergence for matrix-valued functions of bounded variation.
Perturbations à symétrie sphérique de la métrique d'un univers en expansion, II
Perturbative quantum gravity and its relation to gauge theory.
Physics, astrophysics and cosmology with gravitational waves.
Physics of neutron star crusts.
Polyhomogeneous solutions of wave equations in the radiation regime
While the physical properties of the gravitational field in the radiation regime are reasonably well understood, several mathematical questions remain unanswered. The question here is that of existence and properties of gravitational fields with asymptotic behavior compatible with existence of gravitational radiation. A framework to study those questions has been proposed by R. Penrose (R. Penrose, “Zero rest-mass fields including gravitation”, Proc. Roy. Soc. London A284 (1965), 159-203), and developed...
Positive energy in general relativity