2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/224171In this paper we show that Ultradistributions of Exponential Type (UET) are appropriate for the description in a consistent way superstring and superstring field theories. A new Lagrangian for the closed superstring is given. We show that the superstring field is a linear superposition of UET of compact support, and give the notion of anti-superstring. We evaluate the propagator for the superstring field, and calculate the convolution of two of them.33 pages, no figuresHigh Energy Physics - Theorytext