2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/220139We study the holographic dark energy model in a generalized scalar tensor theory. In a universe filled with cold dark matter and dark energy, the effect of potential of the scalar field is investigated in the equation of state parameter. We show that for a various types of potentials, the equation of state parameter is negative and transition from deceleration to acceleration expansion of the universe is possible.11 pages, no figure. To appear in General Relativity and GravitationGeneral Relativity and Quantum Cosmologytext