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The Holographic Universe

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arxiv 1001.2007 v1 pith:G4JWHBD4 submitted 2010-01-13 hep-th astro-ph.COgr-qc

The Holographic Universe

Paul McFadden , Kostas Skenderis This is my paper
classification hep-th astro-ph.COgr-qc
keywords holographicdescriptioninflationarystandardtermsapplicabilitycapablecase
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a holographic description of four-dimensional single-scalar inflationary universes in terms of a three-dimensional quantum field theory. The holographic description correctly reproduces standard inflationary predictions in their regime of applicability. In the opposite case, wherein gravity is strongly coupled at early times, we propose a holographic description in terms of perturbative QFT and present models capable of satisfying the current observational constraints while exhibiting a phenomenology distinct from standard inflation. This provides a qualitatively new method for generating a nearly scale-invariant spectrum of primordial cosmological perturbations.

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

    hep-th 2026-05 conditional novelty 6.0

    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. Cross-Correlations of Metric and Monopole Perturbations from Holographic Cosmology

    hep-th 2026-07 conditional novelty 5.5

    At 1-loop in holographic cosmology, f_NL^{ξÃÃ}=0 while the angle-averaged f_NL^{γÃÃ}=6, from a full ⟨TJJ⟩ computation including contact terms.

  3. Renormalized pseudoentropy in dS/CFT

    hep-th 2026-02 conditional novelty 5.0

    Renormalized holographic pseudoentropy in dS/CFT is constructed from conformal-gravity actions in four and six dimensions, yielding finite sphere values and Mezei-like shape dependence for small deformations.

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

    hep-th 2026-05 unverdicted novelty 4.0

    In a 3d toy model for holographic cosmology, a mass term preserving generalized conformal structure permits 2-loop computations that indicate possible IR finiteness beyond perturbation theory, corresponding to UV fini...