  The modification of the quantum mechanical commutators in a relativistic
theory with an invariant length scale (DSR) is identified. Two examples are
discussed where a classical behavior is approached in one case when the energy
approaches the inverse of the invariant length which appears as a cutoff in the
energy and in the second case when the mass is much larger than the inverse of
the invariant length.

High Energy Physics - Theory;General Relativity and Quantum Cosmology