superlinear Lagrangian, for $ k $ bigger than the critical value $ c (L) $. We obtain growth
estimates for the action potential as a function of $ k $. We also prove that the action
potential can be written as $\Phi _k (x, y)= D_F (x, y)+ f (y)-f (x) $ where $ f $ is a smooth
function and $ D_F $ is the distance function associated to a Finsler metric. References