John R. Klauder
Coherent States for the Hydrogen Atom
(18K, TeX)

ABSTRACT.  The long-standing problem of finding coherent states for the (bound state
portion of the) hydrogen atom is positively resolved. The states in question:
(i) are normalized and are parameterized continuously, (ii) admit a 
resolution of unity with a positive measure, and (iii) enjoy the property
that the temporal evolution of any coherent state by the hydrogen atom
Hamiltonian remains a coherent state for all time.