402 citations · 3.3k across the 52 of their papers we have counts for
1 paper · 2 filters
Giulia Cusin, Filipe de O. Salles, Ilya L. Shapiro
The unphysical spin-2 massive degrees of freedom in higher derivative gravity may be either massive unphysical ghosts or tachyonic ghosts. In the last case there is no Planck-scale…