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arXiv · 2506.14721

Large effects from quantum reference frames

Martin Bojowald·Luis Martinez
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Abstract

Reference frames are used to parameterize measurements of physical effects, but since their practical realization uses material objects, they may affect observations performed in a combined quantum state of the measured system together with the frame. Here, a procedure is used that makes it possible to describe non-monotonic reference scales in a quantum treatment, revealing large quantum effects in the measured system whenever a reference frame encounters a turning point. Subtle quantum correlations in the combined state of system and frame, and more broadly the concept of relational quantum mechanics, can be tested via a characteristic and surprisingly large shift in the measured value.

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Martin Bojowald, Luis Martinez. 2025-06-17. Large effects from quantum reference frames. https://doi.org/10.1088/1751-8121%2Fade648

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