2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/179439The thermodynamics of a gas of strings and D-branes near the Hagedorn transition is described by a coupled set of Boltzmann equations for weakly interacting open and closed long strings. The resulting distributions are dominated by the open string sector, indicating that D-branes grow to fill space at high temperature.8 pages, LaTeX, 1 figureHigh Energy Physics - Theorytext