2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/151649We study two interacting particles in a random potential chain by means of the transfer matrix method. The dependence of the two-particle localization length $λ_2$ on disorder and interaction strength is investigated. Our results demonstrate that the recently proposed enhancement of $λ_2$ as compared to the results for single particles is entirely due to the finite size of the systems considered. This is shown for a Hubbard-like onsite interaction and also a long-range interaction.4 RevTeX 3.0 pages with 3 EPS figures included via psfig, to appear in Phys. Rev. LettDisordered Systems and Neural Networkstext