Srednicki — Quantum Field Theory · Problem 22.1

Canonical Quantization of Scalar Fields — Mark Srednicki

Physics — QFT · noether-charge-commutator

Problem

For the Noether current of eq. (22.6), and assuming that δφa\delta\varphi_a does not involve time derivatives, use the canonical commutation relations to show that [φa,Q]=iδφa,(22.41)[\varphi_a, Q] = i\delta\varphi_a , \tag{22.41} where QQ is the Noether charge.

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