One of the most influential contemporary authors of the new materialist turn in the social sciences is Karen Barad. Barad’s work in agential realism, based on her interpretations of quantum physics, has been widely cited within a growing body of new materialist publications. However, in translating Barad’s assertions into social domains, there has been increasing critical appraisal of the physics underlying her work and its relationship with non-quantum domains. In this paper, we contribute to this discussion by exploring aspects of (...) agential realism through quantum decoherence and quantum Darwinism. We explore implications for Barad’s metaphysics and the relationship of the social with the rest of the material world. (shrink)