Note on the nonuniqueness of the massive Fierz-Pauli theory and spectator fields

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. 88, n. 4 AUG 5 2013.
• Citações Web of Science: 4

Resumo

It is possible to show that there are three independent families of models describing a massive spin-2 particle via a rank-2 tensor. One of them contains the massive Fierz-Pauli model, the only case described by a symmetric tensor. The three families have different local symmetries in the massless limit and can not be interconnected by any local field redefinition. We show here, however, that they can be related with the help of a decoupled and nondynamic (spectator) field. The spectator field may be either an antisymmetric tensor B-mu nu = - B-nu mu, a vector A(mu) or a scalar field phi, corresponding to each of the three families. The addition of the extra field allows us to formulate master actions which interpolate between the symmetric Fierz-Pauli theory and the other models. We argue that massive gravity models based on the Fierz-Pauli theory are not expected to be equivalent to possible local self-interacting theories built up on top of the two new families of massive spin-2 models. The approach used here may be useful to investigate dual (nonsymmetric) formulations of higher-spin particles. (AU)

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