2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/112352The metric of some Lorentzian wormholes in the background of the FRW universe is obtained. It is shown that for a de Sitter space-time the new solution is supported by Phantom Energy. The wave equation for a scalar field in such backgrounds is separable. The form of the potential for the Schrödinger type one dimensional wave equation is found.7 pagesGeneral Relativity and Quantum Cosmologytext