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- 1Do quantum fields carry energy, and does that make them real?●Quantum fields carry energy. Does that prove that they’re real? In quantum physics, we often argue over "what is real?"
Astrophysicist Ethan Siegel argues that quantum fields have a stronger claim to physical reality than other contested quantum concepts like wavefunctions or eigenstates, because they carry measurable energy. The piece, published on Big Think's Starts With a Bang, revisits the long-running debate in quantum physics over which mathematical objects in the theory correspond to things that actually exist in the world.