Perturbation Calculation for Relativistic Energy Shift
Rewriting
as
we calculate the energy shift for a state
.
While there is no spin involved here, we will need to use these states for the spin-orbit interaction
where we can use some of our previous results.
Since this does not depend on either
or
, total
states and the product
states give the same answer.
We will choose to use the total
states,
, so that we can combine this correction
with the spin-orbit correction.
Jim Branson
2013-04-22