Errata for the paper "Anisotropic Gaussian Mutations for Metropolis Light Transport through Hessian-Hamiltonian Dynamics"
The $\alpha > 0$ case in Equation (16) in the paper should read:
$$
\left(\frac{\exp\left(\sqrt{\alpha}T \right) - \exp\left(-\sqrt{\alpha}T\right)}{2\sqrt{\alpha}}\right) \hat{p}\left(0 \right) \\
\qquad + \frac{\beta}{2\alpha}\left(\exp\left(\sqrt{\alpha}T\right) + \exp\left(-\sqrt{\alpha}T\right) - {\color{Red} 2}\right),
$$
instead of
$$
\left(\frac{\exp\left(\sqrt{\alpha}T \right) - \exp\left(-\sqrt{\alpha}T\right)}{2\sqrt{\alpha}}\right) \hat{p}\left(0 \right) \\
\qquad + \frac{\beta}{2\alpha}\left(\exp\left(\sqrt{\alpha}T\right) + \exp\left(-\sqrt{\alpha}T\right) - 1\right).
$$