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- Université Libre de BruxellesBE91 papers
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12 papers · 1 filter
Cosmological billiards and oxidation
Sophie de Buyl, Marc Henneaux, Bernard Julia +1
We show how the properties of the cosmological billiards provide useful information (spacetime dimension and -form spectrum) on the oxidation endpoint of the oxidation sequence…
Hamiltonian Treatment of the Gravitational Collapse of Thin Shells
Juan Crisostomo, Rodrigo Olea
A Hamiltonian treatment of the gravitational collapse of thin shells is presented. The direct integration of the canonical constraints reproduces the standard shell dynamics for a…
Black Holes in de Sitter Space: Masses, Energies and Entropy Bounds
Alejandro Corichi, Andres Gomberoff
In this paper we consider spacetimes in vacuum general relativity --possibly coupled to a scalar field-- with a positive cosmological constant . We employ the Isolated Horizons…
Thermal Decay of the Cosmological Constant into Black Holes
Andres Gomberoff, Marc Henneaux, Claudio Teitelboim +1
We show that the cosmological constant may be reduced by thermal production of membranes by the cosmological horizon, analogous to a particle ``going over the top of the potential…
Brane cosmology with curvature corrections
G. Kofinas, R. Maartens, E. Papantonopoulos
We study the cosmology of the Randall-Sundrum brane-world where the Einstein-Hilbert action is modified by curvature correction terms: a four-dimensional scalar curvature from indu…
Poincare invariant gravity with local supersymmetry as a gauge theory for the M-algebra
Mokhtar Hassaine, Ricardo Troncoso, Jorge Zanelli
Here we consider a gravitational action having local Poincare invariance which is given by the dimensional continuation of the Euler density in ten dimensions. It is shown that the…