Fig. 4.

The three-dimensional intrinsic potential landscape ${\varphi }_0$ for increasing $\beta$ in the zero-fluctuation limit. (A–C) The projection of the flux velocity (purple arrows) and the negative gradient of the intrinsic potential landscape $-\nabla {\varphi }_0$ (black arrows) on the intrinsic potential landscape ${\varphi }_0$ for increasing $\beta$.