Advanced Quantum Mechanics Schwabl · Problem 12.5

Quantization of Relativistic Fields

Physics — Quantum Mechanics · creation-annihilation-operators

Problem

Show that the commutation relations for the normal coordinates (12.1.10) lead to

[a_k, a^\dagger_{k'}] = \delta_{k,k'}\,, \quad [a_k, a_{k'}] = [a^\dagger_k, a^\dagger_{k'}] = 0\,.