81 citations · 101 across the 8 of their papers we have counts for
4 papers · 1 filter
Hubble drift in Palatini -theories
L. Del Vecchio, L. Fatibene, S. Capozziello +3
In a Palatini -model, we define chonodynamical effects due to the choice of atomic clocks as standard reference clocks and we develop a formalism able to quantitati…
Principal Symbol of Euler-Lagrange Operators
Lorenzo Fatibene, Simon Garruto
We shall introduce the principal symbol for Euler-Lagrange operators and use them to charac- terise well-posed initial value problems. We shall clarify how constraints can arise in…
Equivalence among frames in extended gravity
S. Capozziello, L. Fatibene, S. Garruto
We shall discuss equivalence of frames in Palatini f(R)-theories at action level. A Palatini formulation of Brans-Dicke theories (equivalent to the purely metric ones) will also be…
The Cauchy problem in General Relativity: An algebraic characterization
Lorenzo Fatibene, Simon Garruto
In this paper we shall analyse the structure of the Cauchy Problem (CP briefly) for General Relativity (GR briefly) by applying the theory of first order symmetric hyperbolic syste…