In this chapter, we apply our quantum master equation for a system of Fermions in free
electromagnetic field to a hydrogen atom. We obtain a quantum master equation describing
transitions between the eigenstates of a hydrogen atom, with coefficients depending on the
hydrogen wave functions. We find that these coefficients are in agreement with published
experimental data for life times of the lower excited states.
Keywords: spherical coordinates, effective mass, momentum, angular momentum, spin,
total angular momentum, commutation relation, eigenfunction, eigenvalue, spectroscopic
constant, Laguerre polynomial, Legendre polynomial, orthogonality, Bohr radius, transition
operator, degenerate states, radial function, spherical function, decay rate, life time.
