Abstract
In this chapter we move to quantum field theory in which the position operator \(\hat{q}(\tilde{t})\) of Chap. 4 is superseded by some field operator \(\hat{\phi }(\tilde{t}, x)\), which is a function of both space and time and acts to create and destroy the quanta of energy that we interpret as particles.
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Millington, P. (2014). Scalar Field Theory. In: Thermal Quantum Field Theory and Perturbative Non-Equilibrium Dynamics. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-01186-8_7
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DOI: https://doi.org/10.1007/978-3-319-01186-8_7
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