Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2009-11-15
Int.J.Geom.Meth.Mod.Phys.7:899-906,2010
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Some refs added
Scientific paper
10.1142/S0219887810004609
We shall present and analyze two examples of extended theories of gravitation in Palatini formalism with matter that couples to the connection. This will show that the class of Further Extended Theories of Gravitation introduced in ref. [1] does not trivially reduce to f(R) models. It will also produce an example of theory that on-shell endowes spacetime with a non-trivial Weyl geometry where the connection is not induced by the metric structure (though it is compatible with it in the sense of Ehlers-Pirani-Schild; see ref. [2]).
Fatibene Lorenzo
Ferraris Marco
Francaviglia Mauro
Mercadante S.
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