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Holography for the very early Universe and the classic puzzles of Hot Big Bang cosmology

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arxiv 1904.05821 v2 pith:FT262SHB submitted 2019-04-11 hep-th astro-ph.COgr-qc

classification hep-thastro-ph.COgr-qc
keywords problempuzzlesbangcosmologyearlyflowholographicuniverse
verification ladder T0 review T1 audit T2 compute T3 formal
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We show that standard puzzles of hot Big Bang cosmology that motivated the introduction of cosmological inflation, such as the smoothness and horizon problem, the flatness problem and the relic problem are also solved by holographic models for very early universe based on perturbative three dimensional QFT. In the holographic setup, cosmic evolution is mapped to inverse renormalization group (RG) flow of the dual QFT, and the resolution of the puzzles relies on properties of the RG flow.

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Cited by 3 Pith papers

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

  1. 3d QFT IR divergences as UV divergences in 4d Holographic Cosmology

    hep-th 2026-05 unverdicted novelty 6.0 of 10

    Two-loop 2- and 3-point functions of a massive 3d toy QFT with generalized conformal structure are log-finite in the deep IR, suggesting nonperturbative IR finiteness and, holographically, no cosmological singularity.

  2. The Baby Universe is Fine and the CFT Knows It: On Holography for Closed Universes

    hep-th 2025-07 conditional novelty 5.0 of 10

    A closed universe in AdS/CFT is not ruled out by recent SWAP-test arguments; the one-dimensional Hilbert space seen from the CFT is external indistinguishability, and CFT data can reconstruct the closed universe's geometry.

  3. Entanglement Entropy and Complexity of Multicomponent Universe from Holography

    hep-th 2026-01 conditional novelty 4.0 of 10

    For two-component FLRW universes built from an AdS black brane plus p-brane gas, holographic entanglement entropy scales as tau early and as tau^{4/3} (dark matter) or tau^2 (exotic matter) late, while volume complexi...

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