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A gigaparsec-scale local void and the Hubble tension

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arxiv 1912.12600 v1 pith:SWITLWRG submitted 2019-12-29 astro-ph.CO gr-qchep-th

classification astro-ph.COgr-qchep-th
keywords voidgigaparsec-scalehubbletensiondifferentlocalacousticbaryon
verification ladder T0 review T1 audit T2 compute T3 formal

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We explore the possibility of using a gigaparsec-scale local void to reconcile the Hubble tension. Such a gigaparsec-scale void can be produced by multi-stream inflation where different parts of the observable universe follow different inflationary trajectories. The impact of such a void for cosmological observations is studied, especially those involving supernovae, Baryon Acoustic Oscillations (BAO) and the kinetic Sunyaev-Zel'dovich (kSZ) effect. As a benchmark model, a 1.7Gpc scale with boundary width 0.7Gpc and density contrast -0.14 may ease the Hubble tension.

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Cited by 2 Pith papers

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

  1. Interacting dark energy in the early 2020s: a promising solution to the $H_0$ and cosmic shear tensions

    astro-ph.CO 2019-08 conditional novelty 5.0 of 10

    An interacting dark energy model with coupling proportional to the dark energy density alleviates the H0 and S8 tensions in Planck 2018 data but is not preferred once BAO and supernova data are included.

  2. Hubble tension: a short review of theoretical explanations

    astro-ph.CO 2026-07 accept novelty 4.0 of 10

    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.

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