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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 ...
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 ...
Unavoidable conflict between massive gravity models and massive topological terms
(World Scientific Publ Co Pte Ltd, 2014)
Propagator, tree-level unitarity and effective nonrelativistic potential for higher-derivative gravity theories in D dimensions
(American Institute of Physics (AIP), 2002-01-01)
A prescription for computing the propagator for D-dimensional higher-derivative gravity theories, based on the Barnes-Rivers operators, is presented. A systematic study of the tree-level unitarity of these theories is ...
Propagator, tree-level unitarity and effective nonrelativistic potential for three-dimensional higher-derivative gravity augmented by a gravitational Chern-Simons term
(Elsevier B.V., 2000-12-14)
An algorithm for computing the propagator for three-dimensional quadratic gravity with a gravitational Chern-Simons term, based on an extension of the three-dimensional Barnes-Rivers operators, is proposed. A systematic ...
Propagator, tree-level unitarity and effective nonrelativistic potential for three-dimensional higher-derivative gravity augmented by a gravitational Chern-Simons term
(Elsevier B.V., 2000-12-14)
An algorithm for computing the propagator for three-dimensional quadratic gravity with a gravitational Chern-Simons term, based on an extension of the three-dimensional Barnes-Rivers operators, is proposed. A systematic ...
Propagator, tree-level unitarity and effective nonrelativistic potential for higher-derivative gravity theories in D dimensions
(American Institute of Physics (AIP), 2002-01-01)
A prescription for computing the propagator for D-dimensional higher-derivative gravity theories, based on the Barnes-Rivers operators, is presented. A systematic study of the tree-level unitarity of these theories is ...
Propagator, tree-level unitarity and effective nonrelativistic potential for higher-derivative gravity theories in D dimensions
(American Institute of Physics (AIP), 2014)
Unitarity and nonrelativistic potential energy in a higher-order Lorentz symmetry breaking electromagnetic model
(Amer Physical Soc, 2014-12-10)
The Lorentz-violating model proposed by Myers and Pospelov suffers from a higher-derivative pathology due to a dimension-five operator. In particular, its electromagnetic sector exhibits a spectrum which contains, in ...