101 citations · 301 across the 8 of their papers we have counts for
9 papers
Projective Symmetry and Its Breaking in Quadratic Metric-Affine Gravity
Carmen Ferrara, María José Guzmán, Laur Järv
We investigate generalized projective symmetry and its breaking in four-dimensional parity-even metric-affine gravity, considering an action linear in curvature and at most quadrat…
Classification of primary constraints for new general relativity in the premetric approach
Maria-Jose Guzman, Shymaa Khaled Ibraheem
We introduce a novel procedure for studying the Hamiltonian formalism of new general relativity (NGR) based on the mathematical properties encoded in the constitutive tensor define…
Pseudoinvariance and the extra degree of freedom in f(T) gravity
Rafael Ferraro, María José Guzmán
Nonlinear generalizations of teleparallel gravity entail the modification of a Lagrangian that is pseudoinvariant under local Lorentz transformations of the tetrad field. This proc…
Degrees of freedom and Hamiltonian formalism for gravity
María José Guzmán, Rafael Ferraro
The existence of an extra degree of freedom (d.o.f.) in gravity has been recently proved by means of the Dirac formalism for constrained Hamiltonian systems. We will show a…
Reflections on the covariance of modified teleparallel theories of gravity
Cecilia Bejarano, Rafael Ferraro, Franco Fiorini +1
We review the current status of the Lorentz covariance in teleparallel and modified teleparallel theories of gravity, and discuss the controversial features of the different approa…
Degrees of freedom and local Lorentz invariance in f(T) gravity
María José Guzmán, Rafael Ferraro
f(T) gravity is a generalization of the teleparallel equivalent of general relativity (TEGR), where T is the torsion scalar made up of the Weitzenböck connection. This connection d…
Quest for the extra degree of freedom in f(T) gravity
Rafael Ferraro, María José Guzmán
It has recently been shown that gravity has physical degrees of freedom (d.o.f.) in dimensions, contrary to previous claims. The simplest physical i…
Hamiltonian formalism for f(T) gravity
Rafael Ferraro, María José Guzmán
We present the Hamiltonian formalism for gravity, and prove that the theory has degrees of freedom (d.o.f.) in dimensions. We start from a scalar-te…
Hamiltonian formulation of teleparallel gravity
Rafael Ferraro, María José Guzmán
The Hamiltonian formulation of the teleparallel equivalent of general relativity (TEGR) is developed from an ordinary second-order Lagrangian, which is written as a quadratic form…