D=11 Supergravity near a space-like singularity admits a cosmological billiard description based on the hyperbolic Kac-Moody group E10. The quantization of this system via the supersymmetry constraint is shown to lead to wavefunctions involving automorphic (Maass wave) forms under the modular group W^+(E10)=PSL(2,O) with Dirichlet boundary conditions on the billiard domain. A general inequality for the Laplace eigenvalues of these automorphic forms implies that the wave function of the universe is generically complex and always tends to zero when approaching the initial singularity. We discuss possible implications of this result for the question of singularity resolution in quantum cosmology and comment on the differences with other approa...
The gravitational D-dimensional model is considered, with l scalar fields, a cosmological constant a...
The gravitational D-dimensional model is considered, with l scalar fields, a cosmological constant a...
In recent papers, it has been shown that (i) the dynamics of theories involving gravity can be descr...
The mini-superspace quantization of D=11 supergravity is equivalent to the quantization of a E10/K(E...
D=11 Supergravity near a space-like singularity admits a cosmological billiard description based on ...
The mini-superspace quantization of D=11 supergravity is equivalent to the quantization of a E10/K(E...
Close to a spacelike singularity, pure gravity and supergravity in four to eleven spacetime dimensio...
In this paper, we present the formalism to start a quantum analysis for the recent billiard represen...
In this paper, we present the formalism to start a quantum analysis for the recent billiard represen...
We study the "fermionic billiards", i.e. the chaotic dynamics of the gravitino, that arise in the ne...
The structure of the general, inhomogeneous solution of (bosonic) Einstein-matter systems in the vic...
A novel approach to quantization is shown to allow for superpositions of the cosmological constant i...
This thesis consists of an introductory text followed by two separate parts which may be read indepe...
The "Cosmological Billiards" appearing in the study of the D = 11 supergravity have revealed the Wey...
It is shown in detail that the dynamics of the Einstein-dilaton-p-form system in the vicinity of a s...
The gravitational D-dimensional model is considered, with l scalar fields, a cosmological constant a...
The gravitational D-dimensional model is considered, with l scalar fields, a cosmological constant a...
In recent papers, it has been shown that (i) the dynamics of theories involving gravity can be descr...
The mini-superspace quantization of D=11 supergravity is equivalent to the quantization of a E10/K(E...
D=11 Supergravity near a space-like singularity admits a cosmological billiard description based on ...
The mini-superspace quantization of D=11 supergravity is equivalent to the quantization of a E10/K(E...
Close to a spacelike singularity, pure gravity and supergravity in four to eleven spacetime dimensio...
In this paper, we present the formalism to start a quantum analysis for the recent billiard represen...
In this paper, we present the formalism to start a quantum analysis for the recent billiard represen...
We study the "fermionic billiards", i.e. the chaotic dynamics of the gravitino, that arise in the ne...
The structure of the general, inhomogeneous solution of (bosonic) Einstein-matter systems in the vic...
A novel approach to quantization is shown to allow for superpositions of the cosmological constant i...
This thesis consists of an introductory text followed by two separate parts which may be read indepe...
The "Cosmological Billiards" appearing in the study of the D = 11 supergravity have revealed the Wey...
It is shown in detail that the dynamics of the Einstein-dilaton-p-form system in the vicinity of a s...
The gravitational D-dimensional model is considered, with l scalar fields, a cosmological constant a...
The gravitational D-dimensional model is considered, with l scalar fields, a cosmological constant a...
In recent papers, it has been shown that (i) the dynamics of theories involving gravity can be descr...