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Why the DESI Results Should Not Be A Surprise

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arxiv 2503.17659 v1 pith:DRIV3PJC submitted 2025-03-22 astro-ph.CO gr-qchep-phhep-th

classification astro-ph.COgr-qchep-phhep-th
keywords desiresultsshoulddarkdensityenergyevidencefundamental
verification ladder T0 review T1 audit T2 compute T3 formal
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The recent DESI results provide increasing evidence that the density of dark energy is time-dependent. I will recall why, from the point of view of fundamental theory,, this result should not be surprising.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Weinberg's theorem, phantom crossing and screening

    astro-ph.CO 2025-07 conditional novelty 5.0 of 10

    Graviton-loop-induced screening forces single-field dilaton and chameleon dark energy models to keep their equation of state near -1, making observable phantom crossing impossible in this class.

  2. Evolving Dark Sector and the Dark Dimension Scenario

    astro-ph.CO 2025-07 conditional novelty 5.0 of 10

    A two-parameter fading dark sector model, with exponential dark energy potential and exponential dark matter mass, matches DESI DR2 plus supernova data and naturally yields apparent w<-1 phantom behavior.

  3. Constraints on Barrow and Tsallis Holographic Dark Energy from DESI DR2 BAO data

    gr-qc 2025-06 conditional novelty 5.0 of 10

    Barrow and Tsallis holographic dark energy models fit DESI DR2 data but are disfavored by information criteria versus LambdaCDM and do not ease the Hubble tension.

  4. Holographic dark energy in a coasting cosmology

    astro-ph.CO 2025-09 reject novelty 4.0 of 10

    The authors construct a Tsallis-entropy holographic dark energy model that enforces a coasting expansion, fit it to SNIa, BAO and CC data, and report AIC/BIC/KIC improvements over LambdaCDM.

  5. Constraint on Symmetric Teleparallel Gravity with Different Dark energy Parametrizations from DESI DR2 BAO Data

    gr-qc 2025-07 reject novelty 4.0 of 10

    MCMC fits of CPL and BA dark energy parametrizations in power-law f(Q) gravity to DESI DR2 and prior BAO H(z) data find statistically competitive or better fits than Lambda-CDM.

  6. DESI results and Dark Energy from QCD topological sectors

    astro-ph.CO 2025-06 reject novelty 4.0 of 10

    A QCD-vacuum dark-energy model with ρ_DE ∝ H can mimic DESI's evolving w(z), but its key z≥0 predictions rely on an uncomputed activation function.

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