Correction to: Graviton mixing

Correction to: Eur. Phys. J. Plus (2020) 135:461 https://doi.org/10.1140/epjp/s13360-020-00457-x

Equation 15 of this article has been corrected in the original article as shown below.

$$ \begin{aligned} \overline{{\mathcal{G}}}_{\mu \nu \alpha \beta } & = \frac{i}{{k^{2} }}\left( {(1 + A)^{2} P_{\mu \nu \alpha \beta }^{2} - \frac{1}{2} (1 + B)^{2} P_{\mu \nu \alpha \beta }^{0} } \right) \\ & \quad - \frac{{i (1 + A)^{2} P_{\mu \nu \alpha \beta }^{2} }}{{k^{2} - \frac{ - 1}{{{\mathcal{N}}\kappa^{2} {\mkern 1mu} (1 + A)^{2} }}}} + \frac{1}{2} \frac{{i (1 + B)^{2} P_{\mu \nu \alpha \beta }^{0} }}{{k^{2} - \frac{1}{{\frac{1}{2}\zeta {\mathcal{N}}\kappa^{2} {\mkern 1mu} (1 + B)^{2} }}}}. \\ \end{aligned} $$