2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/94474The Calogero model with negative harmonic term is shown to be equivalent to the set of negative harmonic oscillators. Two time-independent canonical transformations relating both models are constructed: one based on the recent results concerning quantum Calogero model and one obtained from dynamical $sL(2,\rr)$ algebra. The two-particle case is discussed in some detail.6 pages LaTeX2e fileExactly Solvable and Integrable Systemstext