Conformal geometry and spatially homogeneous cosmology
Connessioni adattate ad un Riferimento in Relatività Generale
I vari metodi di definire connessioni adattate ad un Riferimento fisico vengono qui ricondotti ad un unico formalismo. Viene inoltre introdotta la nozione generale di campo gravitazionale affine adattato (sia al Riferimento che alla connessione).
Conos de luz.
Using a new characterization of the Lorentz quadrics, we establish a reformulation of the Special Relativity Theory.
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.
De à l’équation de Dirac : une introduction heuristique aux spineurs
De Sitter-invariant field equations
Decay estimates for spherically symmetric Yang-Mills fields in Minkowski space-time
Degenerate space-time paths and the non-locality of quantum mechanics in a Clifford substructure of space-time.
Diferenciální geometrie a fyzikální teorie
Diffeomorphisms constructively associated with mutually diverging spacetimes which allow a natural identification of event points in general relativity. Part I
In questo lavoro si dà una definizione di divergenza fra cronotopi della Relatività Generale e si costruisce un criterio per l'identificazione dei punti eventi di cronotopi divergenti che appartengono ad una classe consistente con la presenza di campi elettromagnetici nel vuoto.