TY - JOUR AU - Glasser, M. Lawrence PY - 2019 SN - 2296-424X UR - http://uvadoc.uva.es/handle/10324/40849 AB - The exact Green function is constructed for a quantum system, with known Green function, which is decorated by two delta function impurities. It is shown that when two such impurities coincide they behave as a single singular potential with... LA - eng PB - Frontiers Media KW - Green function KW - Función de Green KW - Delta potential KW - Potencial delta KW - Schroedinger equation KW - Ecuación de Schrödinger TI - A note on the exact Green function for a quantum system decorated by two or more impurities DO - 10.3389/fphy.2019.00007 ER -