2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/50524We study Witten's background independent open-string field theory in the presence of a constant B-field at one loop level. The Green's function and the partition function with a constant B-field are evaluated for an annulus.10 pages, no figure, LatexHigh Energy Physics - TheoryBackground Independent Open String Field Theory with Constant B field On the Annulustext