Conservation laws and string-like matter distributions
Constant curvature -spacetimes and projective structures
Nous illustrons une classification des espace-temps (2+1) globalement hyperboliques a courboure constant, en terms de certaines structures projectives complexes portées par les surfaces de niveau de leur temps cosmologique canonique. Ceci derive d’une theorie des rotations de Wick canoniques, developpée en collaboration avec Riccardo Benedetti [6], qui sera egalement brievement illustrée.
Constitutive theory in general relativity: spin--material in spaces with torsion.
Constraint-preserving boundary conditions for the linearized Baumgarte-Shapiro-Shibata-Nakamura formulation.
Cosmic censorship for Gowdy spacetimes.
Cosmological background of gravitational waves
Cosmological symmetry breaking and generation of electromagnetic field.
Could the classical relativistic electron be a strange attractor?
Courbure scalaire et trous noirs
Critical phenomena in gravitational collapse.
Critical phenomena in gravitational collapse
A mini-introduction to critical phenomena in gravitational collapse is combined with a more detailed discussion of how gravity regularizes the 'critical spacetimes' that dominate these phenomena.