Griffiths Introduction to Elementary Particles · Problem 5.14

The Feynman Calculus — David J. Griffiths

Physics — QFT · hydrogen-energy-levels-hyperfine

Problem

If you include the fine structure, Lamb shift, and hyperfine splitting, how many different

n = 2

energy levels are there altogether in hydrogen? Find the hyperfine splitting between the

2S_{1/2}

and

2P_{1/2}

levels, and compare the Lamb shift (Problem 5.11).