2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51504An sp-brane can be viewed as the creation and decay of an unstable D(p+1)-brane. It is argued that the decaying half of an sp-brane can be described by a variant of boundary Liouville theory. The pair creation of open strings by a decaying s-brane is studied in the minisuperspace approximation to the Liouville theory. In this approximation a Hagedorn-like divergence is found in the pair creation rate, suggesting the s-brane energy is rapidly transferred into closed string radiation.Talk presented at the Hangzhou String 2002 Conference, August 12-15High Energy Physics - Theorytext