2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/200643In the present letter we find that Starobinsky's inflationary solution is also valid in the Dvali-Gabadadze-Porrati (DGP) model where a 3-brane is embedded in 5-dimensional Minkowski bulk. We show that such a solution is typically not supported by the Self-Accelerated branch of the model, giving therefore a natural selection of the conventional branch of solutions. In the absence of brane induced Einstein-Hilbert term the SA branch is always selected out. We then study the linearized modes around all such de Sitter brane solutions finding perturbative stability for a range of parameters of the brane QFT.15 pages; minor rephrasing of a few sentences (to appear in JCAP)High Energy Physics - TheoryAstrophysicsGeneral Relativity and Quantum Cosmologytext