dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:09:44Z
dc.date.available2018-12-11T17:09:44Z
dc.date.created2018-12-11T17:09:44Z
dc.date.issued2017-01-31
dc.identifierClassical and Quantum Gravity, v. 34, n. 4, 2017.
dc.identifier1361-6382
dc.identifier0264-9381
dc.identifierhttp://hdl.handle.net/11449/174185
dc.identifier10.1088/1361-6382/aa5995
dc.identifier2-s2.0-85011950288
dc.identifier2-s2.0-85011950288.pdf
dc.description.abstractThere are three families of Lagrangians describing massive spin-2 particles via a general (nonsymmetric) rank-2 tensor. Each of those families depends on an arbitrary real parameter, one of them includes the paradigmatic Fierz-Pauli theory whose Hamiltonian positivity is known and reviewed here. Here we apply the plain Dirac-Bergmann procedure in the two remaining families. We identify all Hamiltonian constraints and prove both positivity of the reduced Hamiltonian and correct counting of degrees of freedom. The positivity of each spin mode contribution is demonstrated by using spin projection operators. The massless cases are also examined. In particular, we prove positivity of the reduced Hamiltonian and correct counting of degrees of freedom of a Weyl invariant description of massless spin-2 particles.
dc.languageeng
dc.relationClassical and Quantum Gravity
dc.relation1,809
dc.rightsAcesso aberto
dc.sourceScopus
dc.subjectconstraints
dc.subjectFierz-Pauli
dc.subjectmassive gravity
dc.subjectmassive spin-2
dc.titleHamiltonian positivity of massive spin-2 particles via a rank-2 tensor
dc.typeArtículos de revistas


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