2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/218878Closed string tachyon emission from a traveling long string in Liouville string theory is studied. The exact collective field Hamiltonian in the adjoint sector of the c=1 matrix model is computed to capture the interaction between the tip of the long string and the closed string tachyon field. The amplitude for emission of a single tachyon quantum is obtained in a closed form using the chiral formalism.22 pages, 2 figuresHigh Energy Physics - Theorytext