Griffiths Introduction to Elementary Particles · Problem 4.22

Bound States — David J. Griffiths

Physics — QFT · rotation-operator-unitary

Problem

(a) Show that

U

, in equation (4.28), is unitary. (b) Show that

\det U = 1

. [Hint: You can either do this directly (however, see footnote on page 115), or else use the results of Problem 4.21.]