Weekly Papers on Quantum Foundations (30)

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An Operational Resolution of the Third-Particle Paradox IJQF Weekly Papers • quant-ph updates on arXiv.org / 23h arXiv:2607.20815v1 Announce Type: new Abstract: We give an operational resolution of the third-particle paradox, relevant in the theory of quantum reference frames. The apparent paradox is that a system which is irrelevant in one quantum-reference-frame description can seem to become relevant after changing to another… Read more →

Weekly Papers on Quantum Foundations (29)

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Exact No Signaling in Time without Temporal Classicality IJQF Weekly Papers • quant-ph updates on arXiv.org / 22h arXiv:2607.14583v1 Announce Type: new Abstract: No signaling in time (NSIT) has often been treated as the clean operational remnant of noninvasive measurability. If an earlier measurement leaves every later marginal unchanged, the temporal process appears classical. We show that this inference is false. We… Read more →

Weekly Papers on Quantum Foundations (28)

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The Geometry of Quantum Complexity in Open Systems IJQF Weekly Papers • quant-ph updates on arXiv.org / 20h arXiv:2607.08411v1 Announce Type: new Abstract: We extend Nielsen’s geometric approach for quantum complexity from closed to open quantum systems, whose dynamics is governed by Lindbladian evolution. In this framework, complexity is defined through an optimal-control problem on the space of mixed states, with a… Read more →