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- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT135 papers
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15 papers · 1 filter
Torsion gravity with non-minimally coupled fermionic field: some cosmological models
Stefano Vignolo, Sante Carloni, Luca Fabbri
We investigate some cosmological models arising from a non-minimal coupling of a fermionic field to gravity in the geometrical setting of Einstein-Cartan-Sciama-Kibble gravity. The…
ELKO and Dirac Spinors seen from Torsion
Luca Fabbri, Stefano Vignolo
In this paper, the recently-introduced ELKO and the well-known Dirac spinor fields will be compared; however, instead of comparing them under the point of view of their algebraic p…
Running coupling in electroweak interactions of leptons from f(R)-gravity with torsion
Salvatore Capozziello, Mariafelicia De Laurentis, Luca Fabbri +1
The f(R)-gravitational theory with torsion is considered for one family of leptons; it is found that the torsion tensor gives rise to interactions having the structure of the weak…
The Cauchy problem for f(R)-gravity: an overview
S. Capozziello, S. Vignolo
We review the Cauchy problem for f(R) theories of gravity, in metric and metric-affine for- mulations, pointing out analogies and differences with respect to General Relativity. Th…
On thin-shell wormholes evolving in flat FRW spacetimes
M. La Camera
We analize the stability of a class of thin-shell wormholes with spherical symmetry evolving in flat FRW spacetimes. The wormholes considered here are supported at the throat by a…
Dirac fields in f(R)-gravity with torsion
Luca Fabbri, Stefano Vignolo
We study f(R)-gravity with torsion in presence of Dirac massive fields. Using the Bianchi identities, we formulate the conservation laws of the theory and we check the consistency…