The present essay provides a new metaphysical interpretation of Relational Quantum Mechanics (RQM) in terms of mereological bundle theory. The essential idea is to claim that a physical system in RQM can be defined as a mereological fusion of properties whose values may vary for different observers. Abandoning the Aristotelian tradition centered on the notion of substance, I claim that RQM embraces an ontology of properties that finds its roots in the heritage of David Hume. To this regard, defining what kind of concrete physical objects populate the world according to RQM, I argue that this theoretical framework can be made compatible with (i) a property-oriented ontology, in which the notion of object can be easily defined, and (ii) moderate structural realism, a philosophical position where relations and relata are both fundamental. Finally, I conclude that under this reading relational quantum mechanics should be included among the full-fledged realist interpretations of quantum theory.

本文根据分体束理论对关系量子力学 (RQM) 提供了一种新的形而上学解释。基本思想是声称 RQM 中的物理系统可以定义为属性的分体融合，其值可能因不同的观察者而异。放弃以实体概念为中心的亚里士多德传统，我声称 RQM 包含了一种属性本体论，其根源在于大卫休谟的遗产。在这方面，根据 RQM 定义什么样的具体物理对象填充世界，我认为这个理论框架可以与（i）面向属性的本体兼容，其中对象的概念可以很容易地定义，并且(ii) 温和的结构现实主义，一种哲学立场，其中关系和关系都是基本的。最后，