2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/145865The investigation presented by Doiron, Hache, and Winful [Phys. Rev. A 76, 023823 (2007)] is not valid for the tunneling process as claimed in the paper.Quantum PhysicsComment on "Direct space-time observation of pulse tunneling in an electromagnetic band gap"text