Absence of the Higuchi bound in a family of alternative linear massive spin-2 models

Hemily Gomes Marciano Fortes, Márcio Eduardo da Silva Alves

There is a well known result from the Fierz-Pauli (FP) theory in de Sitter background that is the existence of a lower bound for the mass $m$ of the spin 2 particle, the Higuchi bo…