The clock ambiguity extends to evolution laws under relational views, rendering noninteraction insufficient, and is resolved only by specifying the physical meaning of observables.
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2 Pith papers cite this work. Polarity classification is still indexing.
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For ideal clocks in the Page-Wootters framework, the clock's spectrum uniformizes the world's spectrum, making all world Hamiltonians unitarily equivalent and the ambiguity maximal, even under noninteraction.
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The clock ambiguity problem: extended or extinguished?
The clock ambiguity extends to evolution laws under relational views, rendering noninteraction insufficient, and is resolved only by specifying the physical meaning of observables.