Matches in SemOpenAlex for { <https://semopenalex.org/work/W2993527879> ?p ?o ?g. }
- W2993527879 abstract "We construct the spin-projection operators for a theory containing a symmetric two-index tensor and a general three-index tensor. We then use them to analyze, at linearized level, the most general action for a metric affine theory of gravity with terms up to second order in curvature, which depends on 28 parameters. In the metric case, we recover known results. In the torsion-free case, we are able to determine the most general six-parameter class of theories that are projective invariant, contain only one massless spin 2 and no spin 3, and are free of ghosts and tachyons." @default.
- W2993527879 created "2019-12-13" @default.
- W2993527879 creator A5038025255 @default.
- W2993527879 creator A5055796078 @default.
- W2993527879 date "2020-04-20" @default.
- W2993527879 modified "2023-10-15" @default.
- W2993527879 title "New class of ghost- and tachyon-free metric affine gravities" @default.
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- W2993527879 doi "https://doi.org/10.1103/physrevd.101.084040" @default.
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