2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/12214We argue that gravitational wave contribution to the cosmic microwave background anisotropy at angular scale $\sim 10^0$ may exceed 50% for some models of hybrid inflation producing standard cosmology with the density perturbation slope $n \simeq 1$.3 pages, gziped PS-file, uses sprocl.sty, to be published in Proceedings of the 18th Texas Symposium on Relativistic Astrophysics, eds. A.Olinto, J.Frieman, D.Schramm, World ScientificAstrophysicsGeneration of Gravitational Waves and Scalar Perturbations in Inflation with Effective $Λ$-term and T/S Storytext