2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/28285We analyze critical and massive SO(5) superspin regimes for correlated electrons on a two-chain ladder. We identify fundamental low energy excitations, which carry the quantum numbers of a free electron, and can be probed in (inverse) photo-emission experiments. These excitations do not obey the usual Pauli Principle, but are governed by specific forms of so-called non-abelian exclusion statistics.4 pages, 2 figures, LaTeX (uses revtex)Strongly Correlated Electronstext