[DSRP Evidence](https://dsrpevidence.org/)

# Interpreting quantum-reference-frame transformations through a simple example

Castro-Ruiz et al., 2026, Physical Review A — Physics

Patterns: [Distinctions](https://dsrpevidence.org/pattern/distinctions), [Perspectives](https://dsrpevidence.org/pattern/perspectives)

## In short

What can be observed or distinguished about a physical system depends on which reference frame — which vantage point — describes it, and comparing three competing theoretical frameworks required drawing a precise conceptual distinction between their differing transformation rules and assumptions about accessible information.

## What they found (results)

Constructing two three-qubit states with Z2 symmetry, the authors show the states are indistinguishable by observables relative to one reference frame but distinguishable relative to another, and that three competing quantum-reference-frame frameworks (perspective-neutral, extra-particle, operational) each yield a different transformation rule for the same case.

These researchers were not testing DSRP. The finding is theirs; the correspondence to DSRP is drawn by this site.

[Source](https://doi.org/10.1103/czr8-dv1l)