CANADIAN JOURNAL OF PHYSICS, vol.99, no.9, pp.778-782, 2021 (SCI-Expanded)
We search for first- and second-order corrections to the energy levels of the Pauli-Dirac equation within the RayleighSchrodinger theory. We use some identities satisfied by the associated Laguerre polynomials to reach this aim. We give a list presenting analytical forms of some integrals including two associated Laguerre polynomials, or their derivatives.