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The fate of 'particles' in quantum field theories with interactions

机译：具有相互作用的量子场论中“粒子”的命运

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Most philosophical discussion of the particle concept that is afforded by quantum field theory has focused on free systems. This paper is devoted to a systematic investigation of whether the particle concept for free systems can be extended to interacting systems. The possible methods of accomplishing this are considered and all are found unsatisfactory. Therefore, an interacting system cannot be interpreted in terms of particles. As a consequence, quantum field theory does not support the inclusion of particles in our ontology. In contrast to much of the recent discussion on the particle concept derived from quantum field theory, this argument does not rely on the assumption that a particulate entity be localizable.
机译：量子场论对粒子概念的大多数哲学讨论都集中在自由系统上。本文致力于系统研究自由系统的粒子概念是否可以扩展到交互系统。考虑了完成此操作的可能方法，但发现所有方法均不令人满意。因此，相互作用系统不能用颗粒来解释。结果，量子场论不支持在我们的本体中包含粒子。与从量子场论派生而来的有关粒子概念的最新讨论相反，该论点不依赖于粒子实体可本地化的假设。

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