Auxiliary "massless" spin-2 field in de Sitter universe

H. Pejhan, M. R. Tanhayi, M. V. Takook

For the tensor field of rank-2 there are two unitary irreducible representation (UIR) in de Sitter (dS) space denoted by ${\Pi }_{2,2}^{\pm }$ and ${\Pi }_{2,1}^{\pm }$ [1]. In the flat limit…