  The 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.

Exactly Solvable and Integrable Systems;Exactly Solvable and Integrable Systems