2014/05/31 by D. Dalmazi, A. L. R. dos Santos, E. L. Mendonça · 2 citations
Physics and Astronomy · #Classical mechanics #Cosmology and Gravitation Theories #Embedment #Equations of motion #Mathematical physics #Motion (physics) #Pauli exclusion principle #Physics #Quantum Mechanics and Applications #Quantum electrodynamics #Quantum mechanics #Relativity and Gravitational Theory #Spin (aerodynamics) #Thermodynamics #hep-th
paper · pdf · doi:10.1088/0264-9381/32/1/015022
published in Classical and Quantum Gravity 32(1), 015022 (IOP Publishing) · 13 pages
arxiv created 2014/11/11 · openalex publication_date 2014/12/11 · arxiv updated 2015/06/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Here we obtain alternative descriptions of massive spin-2 particles by an embedding procedure of the Fierz-Pauli equations of motion. All models are free of ghosts at the quadratic level, although most of them are of a higher order in derivatives. The models that we obtain can be nonlinearly completed in terms of a dynamic and a fixed metric. They include some f(R) massive gravities recently considered in the literature. In some cases there is an infrared (no derivative) modification of the Fierz-Pauli mass term altogether, with higher order terms in derivatives. The analytic structure of the propagator of the corresponding free theories is not affected by the extra terms in the action, as compared to the usual second order Fierz-Pauli theory.