Massive spin-2 particle from a rank-2 tensor

Autor(es)

Dalmazi, D. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, BR-12516410 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physical Review D; v. 87, n. 12 JUN 19 2013.
• Citações Web of Science: 7

Resumo

Here we obtain all possible second-order theories for a rank-2 tensor which describe a massive spin-2 particle. We start with a general second-order Lagrangian with ten real parameters. The absence of lower-spin modes and the existence of two local field redefinitions leads us to only one free parameter. The solutions are split into three one-parameter classes according to the local symmetries of the massless limit. In the class which contains the usual massive Fierz-Pauli theory, the subset of spin-1 massless symmetries is maximal. In another class where the subset of spin-0 symmetries is maximal, the massless theory is invariant under Weyl transformations and the mass term does not need to fit into the form of the Fierz-Pauli mass term. In the remaining third class neither the spin-1 nor the spin-0 symmetry is maximal and we have a new family of spin-2 massive theories. (AU)

• Processo FAPESP: 13/00653-4 - Partículas de spin-2 massivas
• Beneficiário: Denis Dalmazi
• Modalidade de apoio: Auxílio à Pesquisa - Regular