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Can the Hubble tension be resolved by bulk viscosity?

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arxiv 2107.13533 v2 pith:Z3WSCE6O submitted 2021-07-26 gr-qc hep-th

Can the Hubble tension be resolved by bulk viscosity?

classification gr-qc hep-th
keywords bulkinferreduniversevalueviscositybridgecosmicearly
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We show that the cosmic bulk viscosity estimated in our previous works is sufficient to bridge the $H_0$ value inferred from observations of the early universe with the value inferred from the local (late) universe.

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Cited by 4 Pith papers

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

  1. Hubble tension: a short review of theoretical explanations

    astro-ph.CO 2026-07 accept novelty 4.0

    A comprehensive review finds no theoretical Hubble-tension solution yet passes all consistency tests; new early-dark-energy chains reach high H0 only when the SH0ES calibration is added.

  2. Primordial black hole formation in bulk-viscous cosmology

    gr-qc 2026-06 unverdicted novelty 4.0

    Bulk viscosity raises the critical collapse threshold for primordial black holes by an amount comparable to the viscosity strength and increases the resulting black hole masses.

  3. Dissipative Unimodular Gravity: Linking Energy Diffusion to Bulk Viscosity as an Alternative to $\Lambda$CDM under DESI DR2 Data

    gr-qc 2026-01 conditional novelty 4.0

    A viscous version of unimodular gravity fits late-time cosmological data as well as ΛCDM, but the fitted viscosity is consistent with zero and the claimed energy nonconservation is not statistically significant.

  4. Dissipative Cosmology and the Nature of Dark Energy: Insights from Bulk Viscosity with DESI DR2 observations

    astro-ph.CO 2026-06 unverdicted novelty 3.0

    Bulk viscous fluid models for dark energy yield improved fits to supernova, BAO, and CMB data over LambdaCDM, especially in the interacting non-minimal case.