Deep connections exist between fields and particles from "summary" of The Quantum Theory of Fields by Steven Weinberg,Weinberg S
The world of elementary particles is a complicated one, filled with a myriad of different entities. These particles are described by quantum fields, which are themselves complex mathematical objects that fill all of space and time. The quantum theory of fields seeks to understand the interactions between these particles and fields, and in doing so, reveals the deep connections that exist between them. At the heart of this theory is the idea that particles are excitations of their corresponding fields. Just as a wave can be thought of as an excitation of the surface of a pond, particles can be thought of as excitations of their respective fields. This means that particles are not separate entities from fields, but rather are intimately ...
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