ABSTRACT
In this chapter we shall deal with quantum dynamics and in
particular with the basic equation that governs quantum dynamics,
the Schro¨dinger equation. We shall consider two of the most
important model systems in quantum mechanics: the free particle
and the harmonic oscillator. Moreover, we shall deal with the density
matrix formalism and composite systems. Another crucial concept
that will be introduced here is that of entanglement, a particular
manifestation of quantum features.
