Explicit Hermitian operator functions of q and p are constructed for the generators of the de Sitter group $O(4, 1)$ on the bound-state wave functions for the hydrogen atom. This is done for each of the one-parameter family of irreducible unitary representations of $O(4, 1)$ in which the irreducible representations of the four-dimensional rotation group $O\left(4\right)\mathrm{}$ correspond to the degeneracy subspaces of the bound-state energy levels. The commutation relations and the values of the invariants which label the representation of $O(4, 1)$ are verified by direct operator calculations.

• Received 3 February 1966

DOI:https://doi.org/10.1103/PhysRev.148.1276