2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/207843In the standard methodology for evaluating the Hawking radiation emanating from a black hole, the background geometry is fixed. Trying to be more realistic we consider a dynamical geometry for a two-dimensional charged black hole and we evaluate the Hawking radiation as tunneling process. This modification to the geometry gives rise to a nonthermal part in the radiation spectrum. We explore the consequences of this new term for the extremal case.7 pages, LaTeX, no figuresHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext