352 citations
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- International Center for Relativistic AstrophysicsIT29 papers
- Sapienza University of RomeIT17 papers
- National Institute for AstrophysicsIT11 papers
- University of Rome Tor VergataIT10 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PaviaIT9 papers
- University of InsubriaIT9 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT8 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TriesteIT8 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT7 papers
- University of BolognaIT7 papers
- University of TriesteIT7 papers
- Centre National de la Recherche ScientifiqueFR6 papers
30 papers · 1 filter
Stars in five dimensional Kaluza Klein gravity
D. Pugliese, G. Montani
In the five dimensional Kaluza Klein (KK) theory there is a well known class of static and electromagnetic--free KK--equations characterized by a naked singularity behavior, namely…
Semi-Classical Isotropization of the Universe during a de Sitter phase
Francesco Cianfrani, Giovanni Montani, Marco Muccino
Semi-classical states for the Wheeler-DeWitt equation of a Bianchi type I model in the presence of a scalar field are analyzed. It is outlined how this scheme can effectively descr…
Dimensional Reduction of the 5D Kaluza-Klein Geodesic Deviation Equation
V. Lacquaniti, G. Montani, F. Vietri
In the work of Kerner et al. (2001) the problem of the geodesic deviation in a 5D Kaluza Klein background is faced. The 4D space-time projection of the resulting equation coincides…
The Immirzi parameter from an external scalar field
Francesco Cianfrani, Giovanni Montani
We promote the Immirzi parameter to be a minimally coupled scalar field and we analyzed the Hamiltonian constraints in the framework of Loop Quantum Gravity without the time gauge.…
Semiclassical suppression of weak anisotropies of a generic Universe
Marco Valerio Battisti, Riccardo Belvedere, Giovanni Montani
A semiclassical mechanism which suppresses the weak anisotropies of an inhomogeneous cosmological model is developed. In particular, a wave function of this Universe having a meani…
Dynamics of Matter in a Compactified Kaluza-Klein Model
Valentino Lacquaniti, Giovanni Montani
A longstanding problem in Kaluza-Klein models is the description of matter dynamics. Within the 5D model, the dimensional reduction of the geodesic motion for a 5D free test partic…