140 citations · 308 across the 25 of their papers we have counts for
4 papers · 1 filter
The Einstein-Hilbert Lagrangian Density in a 2-dimensional Spacetime is an Exact Differential
Roldao da Rocha, W. A. Rodrigues
Recently Kiriushcheva and Kuzmin claimed to have shown that the Einstein-Hilbert Lagrangian cannot be written in any coordinate gauge as an exact differential in a 2-dimensional sp…
Diffeomorphism Invariance and Local Lorentz Invariance
Roldao da Rocha, Waldyr A. Rodrigues
We show that diffeomorphism invariance of the Maxwell and the Dirac-Hestenes equations implies the equivalence among different universe models such that if one has a linear connect…
Where are ELKO Spinor Fields in Lounesto Spinor Field Classification?
Roldao da Rocha, Waldyr Alves Rodrigues
This paper proves that from the algebraic point of view ELKO spinor fields belong together with Majorana spinor fields to a wider class of spinor fields, the so-called flagpole spi…
Hidden Consequence of Active Local Lorentz Invariance
W. A. Rodrigues, Roldao da Rocha, J. Vaz
In this paper we investigate a hidden consequence of the hypothesis that Lagrangians and field equations must be invariant under active local Lorentz transformations. We show that…