2024
DOI: 10.1007/s10773-023-05540-4
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Quantum Scalar Field Theory Based on an Extended Least Action Principle

Jianhao M. Yang

Abstract: Recently it is shown that the non-relativistic quantum formulations can be derived from an extended least action principle Yang (2023). In this paper, we apply the principle to massive scalar fields, and derive the Schrödinger equation of the wave functional for the scalar fields. The principle extends the least action principle in classical field theory by factoring in two assumptions. First, the Planck constant defines the minimal amount of action a field needs to exhibit in order to be observable. Second, t… Show more

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