2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/188495In this short letter we present a class of remarkably simple solutions to Witten's open string field theory that describe marginal deformations of the underlying boundary conformal field theory. The solutions we consider correspond to dimension-one matter primary operators that have non-singular operator products with themselves. We briefly discuss application to rolling tachyons.13 pagesHigh Energy Physics - Theorytext