Invariant $\lambda$-translators for the Gauss curvature flow in Euclidean space

A $\lambda$-translator is a surface in Euclidean space ${\mathbb{R}}^3$ whose Gauss curvature $K$ satisfies $K=⟨N,\vec{v}⟩+\lambda$, where $N$ is the Gauss map, $\vec{v}$ is a fixed direction, and $\lambda \in \mathbb{R}$. In this paper, we classify all $\lambda$-translators that are invariant by a one-parameter group of translations and a one-parameter group of rotations.