2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/196184In continuation of the papers hep-th/0505012 and hep-th/0508101 we investigate the consequences when $N$ open-string tachyons roll down simultaneously. We demonstrate that the $N$-Tachyon system coupled to gravity does indeed give rise to the assisted slow-roll inflation.12 pages; v2: minor correction in eq.15 and a note added; v3: mix-up of convention corrected in sec.3, small change in resultsHigh Energy Physics - TheoryAstrophysicstext