428 citations · 495 across the 13 of their papers we have counts for
9 papers · 1 filter
On the "Legendre scalarization" of nonlinear gravity theories
Guido Magnano
We discuss the proposal of a new method to transform a f(R) metric gravity theory into a general relativistic theory including an auxiliary scalar field, recently introduced by S.…
Test-field limit of metric nonlinear gravity theories
Guido Magnano, Krzysztof A. Meissner, Leszek M. SokoŁOwski
In the framework of alternative metric gravity theories, it has been shown by several authors that a generic Lagrangian depending on the Riemann tensor describes a theory with 8 de…
Constraining the Physical State by Symmetries
L. Fatibene, M. Ferraris, G. Magnano
After reviewing the hole argument and its relations with initial value problem and general covariance, we shall discuss how much freedom one has to define the physical state of a s…
Nonlinear Gravitational Lagrangians revisited
Guido Magnano
The Legendre transformation method, applied in 1987 to deal with purely metric gravitational Lagrangians with nonlinear dependence on the Ricci tensor, is extended to metric-affine…
Nonlinear massive spin-two field generated by higher derivative gravity
G. Magnano, L. M. Sokolowski
We present a systematic exposition of the Lagrangian field theory for the massive spin-two field generated in higher-derivative gravity. It has been noticed by various authors that…
Symmetry properties of the metric energy-momentum tensor in classical field theories and gravity
Guido Magnano, Leszek M. Sokolowski
We derive a generic identity which holds for the metric (i.e. variational) energy-momentum tensor under any field transformation in any generally covariant classical Lagrangian fie…