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The Price of Abandoning Dark Matter Is Nonlocality

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arxiv 2402.11716 v1 pith:4HZRXVQD submitted 2024-02-18 gr-qc astro-ph.COhep-th

The Price of Abandoning Dark Matter Is Nonlocality

classification gr-qc astro-ph.COhep-th
keywords priceabandoningcontextdarkmatternonlocalityacousticanswer
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We consider the classic question posed by Pardo and Spergel about the price of abandoning dark matter in the context of an invariant, metric-based theory of gravity. Our answer is that the price is nonlocality. This has been known for some time in the context of the quasi-static regime. We show that it also applies for cosmology and we exhibit a model which reproduces standard CDM successes such as perturbations in the cosmic microwave background, baryon acoustic oscillations and structure formation.

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  1. Emergent Dark Matter

    hep-ph 2025-11 conditional novelty 6.0

    Dark matter is modeled as the emergent massive in-medium state of a 3-form gauge field that otherwise behaves as dark energy.