If in quantum field theory all matter is just an energy wave, then

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Physicist/r Dylan J Dance claims, 'There are No waves involved in quantum field theory'. If not, then what are they? - Quora

Is quantum mechanics an electromagnetic theory? Where is the ether composed of matter? - Quora

This Is Why Quantum Field Theory Is More Fundamental Than Quantum Mechanics, by Ethan Siegel, Starts With A Bang!

Quantum Mechanics: What is oscillating in matter waves? - Quora

Why does wave transfer energy but not matter? - Quora