2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/193912We apply the conical singularity method to the two dimensional version of the Schwarzschild metric to obtain the Kruskal coordinates of the black hole in a very simple and direct way. Then we make use of this metric in an approximated version and calculate the expected value of energy-momentum tensor of a massless quantum field near the horizon, resulting in regular expressions for its components.General Relativity and Quantum CosmologyHigh Energy Physics - Theorytext