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Analytical regularisation for confined quantum fields between parallel surfaces
F C Santos, A C Tort, E Elizalde
We review a simple technique for evaluating the vacuum energy stemming from non-trivial boundary conditions and review results for the Casimir energy of a massive fermionic field c…
Rotating "Black Holes" with Holes in the Horizon
Alexander Burinskii, Emilio Elizalde, Sergi R. Hildebrandt +1
Kerr-Schild solutions of the Einstein-Maxwell field equations, containing semi-infinite axial singular lines, are investigated. It is shown that axial singularities break up the bl…
Multi-(super)graviton theory on topologically non-trivial backgrounds
Guido Cognola, Emilio Elizalde, Sergio Zerbini
It is shown that in some multi-supergraviton models, the contributions to the effective potential due to a non-trivial topology can be positive, giving rise in this way to a positi…
One-loop f(R) gravity in de Sitter universe
Guido Cognola, Emilio Elizalde, Shin'ichi Nojiri +2
Motivated by the dark energy issue, the one-loop quantization approach for a family of relativistic cosmological theories is discussed in some detail. Specifically, general …
Dark Energy: Vacuum Fluctuations, the Effective Phantom Phase, and Holography
Emilio Elizalde, Shin'ichi Nojiri, Sergei D. Odintsov +1
We aim at the construction of dark energy models without exotic matter but with a phantom-like equation of state (an effective phantom phase). The first model we consider is decayi…