2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41518I study a fresh inflationary model with a scalar field nonminimally coupled to gravity. An example is examined. I find that, as larger is the value of $p$ (the power of the scale factor), smaller (but larger in its absolute value) is the necessary value of the coupling $ξ$ to the inflaton field fluctuations can satisfy a scale invariant power spectrum.version accepted in General Relativity and GravitationHigh Energy Physics - PhenomenologyGeneral Relativity and Quantum Cosmologytext