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Discussion between Giorgos G and Peter Kravchuk

Discussion between Giorgos G and Pete…

Imported from a comment discussion on https://physics.stackexchange.com/questions/819575/understanding-virtual-particles-and-the-mediation-of-forces
242d ago – Oбжорoв
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Peter Kravchuk
Jun 26, 2024 16:52
My comment was furthermore stressing that even the real particles are only one of the features of the QFT. They appear only as asymptotic states in infinite volume; I am not aware of a useful notion of a one-particle state for an interacting theory in finite volume. QFT is a theory of quantum fields, not of classical fields, and not of particles.