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T-invariance, CPT-invariance and local commutativity of the quantum model \((ch\phi)_ 2\). (Russian. English summary) Zbl 0606.35069

A concise proof is given of certain identities which are of importance for the quantization of the \((ch\phi)_ 2\) model.

MSC:

35Q99 Partial differential equations of mathematical physics and other areas of application
81T08 Constructive quantum field theory