By looking at some physical formula and noticing various symbols like c and hbar, one can immediately say that the formula in question describes relativistic / quantum effects and not classical. What about QFT? Is there any way one can, only by looking at the formula, say that it's a product of QFT formalism instead of standard (relativistic) quantum mechanics? I.e. does QFT has its own special signature?(adsbygoogle = window.adsbygoogle || []).push({});

Thanks

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# The signature of QFT

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