2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/115709In this paper we investigate the diffusion of the thermal pulse in Planck Gas. We show that the Fourier diffusion equation gives the speed of diffusion, v > c and breaks the causality of the thermal processes in Planck gas .For hyperbolic heat transport v<c and causality is valid8 pagesGeneral Physicstext