Difficulties of teleparallel theories of gravity with local Lorentz symmetry
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DOI: 10.1088/1361-6382/ab7288
Abstract: A brief discussion is made about the relevance of surface terms in the Lagrangian and Hamiltonian formulations of theories of gravity. These surface terms play an important role in the variation of the action integral.… read more here.
Keywords: lorentz symmetry; gravity local; local lorentz; gravity ... See more keywords
Gravitational Waves in Modified Teleparallel Theories
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DOI: 10.1103/physrevd.97.124064
Abstract: We investigate the gravitational waves and their properties in various modified teleparallel theories, such as $f(T), f(T,B)$ and $f(T,T_G)$ gravities. We perform the perturbation analysis both around a Minkowski background, as well as in the… read more here.
Keywords: modified teleparallel; order; gravitational waves; first order ... See more keywords
On the Gauge Fixing in the Hamiltonian Analysis of General Teleparallel Theories
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DOI: 10.3390/universe5060143
Abstract: The covariant formulation of teleparallel gravity theories must include the spin connection, which has 6 degrees of freedom. One can, however, always choose a gauge such that the spin connection is put to zero. In… read more here.
Keywords: general teleparallel; hamiltonian analysis; spin connection; teleparallel theories ... See more keywords
Reflections on the Covariance of Modified Teleparallel Theories of Gravity
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DOI: 10.3390/universe5060158
Abstract: 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 approaches. We also revisit the issue of the remnant Lorentz… read more here.
Keywords: theories gravity; modified teleparallel; teleparallel theories; gravity ... See more keywords