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New class of generalized coupling theories
Justin C. Feng, Sante Carloni
We propose a new class of gravity theories which are characterized by a nontrivial coupling between the gravitational metric and matter mediated by an auxiliary rank-2 tensor. The…
Cosmological phase space of generalized hybrid metric-Palatini theories of gravity
João L. Rosa, Sante Carloni, José P. S. Lemos
Using a dynamical system approach we study the cosmological phase space of the generalized hybrid metric-Palatini gravity theory, characterized by the function $f\left(R,\mathcal R…
Static compact objects in Einstein-Cartan theory
Paulo Luz, Sante Carloni
We generalize the Tolman-Oppenheimer-Volkoff equations for space-times endowed with a Weyssenhoff like torsion field in the Einstein-Cartan theory. The new set of structure equatio…
On Derrick's theorem in curved spacetime
Sante Carloni, João Luís Rosa
We extend Derrick's theorem to the case of a generic irrotational curved spacetime adopting a strategy similar to the original proof. We show that a static relativistic star made o…