Quantum

Ontology without states: PBR as an argument for dynamics-first realism

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 30/10/2026, 06:43:26 UTC.

Briefings

A new arXiv preprint argues that the PBR theorem supports a 'dynamics-first' view of reality, distinguishing it from 'state-first' interpretations. The author claims this distinction is crucial for causal explanation and notes that PBR's assumptions rely on the former. The paper concludes that quantum states must either be part of reality or that reality lacks a fundamental state-based structure.

Key points

• The PBR theorem is commonly interpreted to establish that pure quantum states represent physical properties of systems rather than mere knowledge encodings.
• The author distinguishes between state-first and dynamics-first physical theories, arguing that the latter supports different causal explanations than the former.

Context

This article proposes a new framework for understanding quantum foundations by distinguishing between two types of physical theories regarding the nature of quantum states. The distinction is presented as essential for causal explanation, challenging standard interpretations of the PBR theorem.

Limitations

The evidence is a single arXiv preprint with no peer review, limited to the abstract and author's argument. No experimental data, specific dates of experiments, or named researchers beyond the author are provided. The paper does not cite other studies or offer further supporting evidence.

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