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Generalized black hole entropy in two dimensions
Shin'ichi Nojiri, Sergei D. Odintsov, Valerio Faraoni
The Bekenstein-Hawking entropy of a black hole is proportional to its horizon area, hence in spacetime dimensions it is constant because the horizon degenerates into two poin…
Are quantization rules for horizon areas universal?
Valerio Faraoni, Andres F. Zambrano Moreno
Doubts have been expressed on the universality of holographic/string-inspired quantization rules for the horizon areas of stationary black holes or the products of their radii, alr…
Reconstructing the universe history, from inflation to acceleration, with phantom and canonical scalar fields
Emilio Elizalde, Shin'ichi Nojiri, Sergei D. Odintsov +2
We consider the reconstruction technique in theories with a single or multiple (phantom and/or canonical) scalar fields. With the help of several examples, it is demonstrated expli…
Extended Planck Scale
F. I. Cooperstock, V. Faraoni
Traditional derivations of the Planck mass ignore the role of charge and spin in general relativity. From the Kerr-Newman null surface and horizon radii, quantized charge and spin…
Energy conditions and classical scalar fields
S. Bellucci, V. Faraoni
Attention has been recently called upon the fact that the weak and null energy conditions and the second law of thermodynamics are violated in wormhole solutions of Einstein's theo…
Scalar gravitational waves and Einstein frame
S. Bellucci, V. Faraoni, D. Babusci
The response of a gravitational wave detector to scalar waves is analysed in the framework of the debate on the choice of conformal frames for scalar-tensor theories. A correction…
A crucial ingredient of inflation
Valerio Faraoni
Nonminimal coupling of the inflaton field to the Ricci curvature of spacetime is generally unavoidable, and the paradigm of inflation should be generalized by including the corresp…