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Future Perspective of Muons: A Quantum Particle Measuring Quantum Processes

Berlie A, Biswas S, Louat A, Stewart R, Wilkinson J

ACS omega, 2026

Abstract

Although considered a niche technique, muon spectroscopy provides unique and complementary insights into a range of different materials, from hard condensed matter to biological samples and everything in between. The muon has a mass of 19mp or 207m e , and serves as a local probe of quantum states that can provide insight into the bulk properties of materials. While often interpreted in a classical framework, the muon is itself a quantum particle, and it is increasingly common for researchers to take this into account when thinking about muon spectroscopy experiments. In this perspective, we focus on the power of using this quantum treatment of muon spectroscopy, which is a key future direction for the technique.

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