18 citations · 67 across the 6 of their papers we have counts for
6 papers
New class of spin projection operators for 3D models
A. Accioly, B. Pereira-Dias, C. A. Hernaski +1
A new set of projection operators for three-dimensional models are constructed. Using these operators, an uncomplicated and easily handling algorithm for analysing the unitarity of…
Considerations on the Graviton Excitation Modes of Horava-Lifshitz Gravity
B. Pereira-Dias, C. A. Hernaski, J. A. Helayel-Neto
A new set of projection operators is constructed to suitably handle non-relativistic theories of gravity with anisotropic scaling, including the ones with parity-violating terms. T…
Some interesting features of new massive gravity
Antonio Accioly, José Helayël-Neto, Eslley Scatena +3
A proof that new massive gravity - the massive 3D gravity model proposed by Bergshoeff, Hohm and Townsend (BHT) - is the only unitary system at the tree level that can be construct…
Probing the Effects of Lorentz-Symmetry Violating Chern-Simons and Ricci-Cotton Terms in Higher Derivative Gravity
B. Pereira-Dias, C. A. Hernaski, J. A. Helayël-Neto
The combined effects of the Lorentz-symmetry violating Chern-Simons and Ricci-Cotton actions are investigated for the Einstein-Hilbert gravity in the second order formalism modifie…
Chern-Simons Gravity with (Curvature)- and (Torsion)-Terms and A Basis of Degree-of-Freedom Projection Operators
J. A. Helayël-Neto, C. A. Hernaski, B. Pereira-Dias +2
We investigate the effects of (Curvature)- and (Torsion)- terms in the Einstein-Hilbert-Chern-Simons Lagrangian. The purposes are two-fold: (i) to show the efficacy of…
Extending the Spin Projection Operators for Gravity Models with Parity-Breaking in 3-D
C. A. Hernaski, B. Pereira-Dias, A. A. Vargas-Paredes
We propose a new basis of spin-operators, specific for the case of planar theories, which allows a Lagrangian decomposition into spin-parity components. The procedure enables us to…