In, QFT, an elementary particles is an excitation of its quantum field. Quantum fields are just mathematical. For example an electron is excitation of the electron field. But is the excitation of the field physically real or just mathematical? What i mean is, is there something physically existing where the excitation is?(adsbygoogle = window.adsbygoogle || []).push({});

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# QFT, excitation of quantum field, physical or mathematical?

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