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The covariant formulation of f(T) gravity
(Iop Publishing Ltd, 2016-06-09)
We show that the well-known problem of frame dependence and violation of local Lorentz invariance in the usual formulation of f(T) gravity is a consequence of neglecting the role of spin connection. We re-formulate f(T) ...
Modelagem gravimétrica da Bacia de Taubaté-vale do Rio Paraíba do Sul, leste do estado de São Paulo
(2001-12-01)
This paper presents the gravity survey refinement of the Paraíba do Sul river valley, east region of São Paulo state, by acquisition of 646 gravity stations. Further than the traditional Free-Air and Bouguer corrections, ...
An Improved Framework for Quantum Gravity
(Mdpi, 2020-12-01)
General relativity has two fundamental problems that render it unsuitable for tackling the gravitational field's quantization. The first problem is the lack of a genuine gravitational variable representing gravitation only, ...
Causality in 3D massive gravity theories
(American Physical Society, 2017-05)
We study the constraints coming from the local causality requirement in various 2+1 dimensional dynamical theories of gravity. In topologically massive gravity, with a single parity noninvariant massive degree of freedom, ...
Unavoidable conflict between massive gravity models and massive topological terms
(World Scientific Publ Co Pte Ltd, 2004-04-10)
Massive gravity models in (2 + 1) dimensions, such as those obtained by adding to Einstein's gravity the usual Fierz-Pauli, or the more complicated Ricci scalar squared (R-2), terms, are tree level unitary. Interesting ...
McVittie solution in f(T) gravity
(Springer, 2017-12)
We show that McVittie geometry, which describes a black hole embedded in a FLRW universe, not only solves the Einstein equations but also remains as a non-deformable solution of f(T) gravity. This search for GR solutions ...
Unified formalism for Palatini gravity
(World Scientific, 2017-12-12)
This paper is devoted to the construction of a unified formalism for Palatini and unimodular gravity. The idea is to employ a relationship between unified formalism for a Griffiths variational problem and its classical ...
Effects of Scalar-Tensor-Vector Gravity on relativistic jets
(Springer, 2017-10)
Scalar-Tensor-Vector Gravity (STVG) is a theory that does not require dark components to describe astrophysical data. We aim at constraining the free parameters of STVG based on recent observations of the jet in M87. We ...