4 papers
Counting the negative eigenvalues of the thermalon in three dimensions
Rodrigo Aros, Andres Gomberoff, Alejandra Montecinos
Some years ago it was shown that the cosmological constant may be reduced by thermal production of membranes that, after nucleation, collapse into a black hole. The probability of…
Dyons with potentials: duality and black hole thermodynamics
Glenn Barnich, Andres Gomberoff
A modified version of the double potential formalism for the electrodynamics of dyons is constructed. Besides the two vector potentials, this manifestly duality invariant formulati…
Turning the Cosmological Constant into Black Holes
Andres Gomberoff, Marc Henneaux, Claudio Teitelboim
It is known that there is a quantum mechanical tunneling process which, through nucleation of a membrane, induces a transition between two de Sitter spaces, lowering the cosmologic…
On group averaging for non-compact groups
Andres Gomberoff
We review some aspects of the use of a technique known as group averaging, which provides a tool for the study of constrained systems. We focus our attention on the case where the…