Sub-diffusive behavior in the Standard Map Matheus S. Palmero, Gabriel I. Díaz, Iberê L. Caldas and Igor M. Sokolov Eur. Phys. J. Spec. Top., 230 14-15 (2021) 2765-2773 Published online: 05 June 2021 DOI: 10.1140/epjs/s11734-021-00165-2