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Holography for cosmology

Holography for cosmology
Holography for cosmology
We propose a holographic description of four-dimensional single-scalar inflationary universes, and show how cosmological observables, such as the primordial power spectrum, are encoded in the correlation functions of a three-dimensional quantum field theory (QFT). The holographic description correctly reproduces standard inflationary predictions in the regime where a perturbative quantization of fluctuations is justified. In the opposite regime, wherein gravity is strongly coupled at early times, we propose a holographic description in terms of perturbative large N QFT. Initiating a holographic phenomenological approach, we show that models containing only two parameters, N and a dimensionful coupling constant, are capable of satisfying the current observational constraints.
1550-7998
117-171
McFadden, Paul
4e7762ff-9b96-4516-b333-be01784fdbae
Skenderis, Kostas
09f32871-ffb1-4f4a-83bc-df05f4d17a09
McFadden, Paul
4e7762ff-9b96-4516-b333-be01784fdbae
Skenderis, Kostas
09f32871-ffb1-4f4a-83bc-df05f4d17a09

McFadden, Paul and Skenderis, Kostas (2010) Holography for cosmology. Physical Review D, 81 (2), 117-171. (doi:10.1103/PhysRevD.81.021301).

Record type: Article

Abstract

We propose a holographic description of four-dimensional single-scalar inflationary universes, and show how cosmological observables, such as the primordial power spectrum, are encoded in the correlation functions of a three-dimensional quantum field theory (QFT). The holographic description correctly reproduces standard inflationary predictions in the regime where a perturbative quantization of fluctuations is justified. In the opposite regime, wherein gravity is strongly coupled at early times, we propose a holographic description in terms of perturbative large N QFT. Initiating a holographic phenomenological approach, we show that models containing only two parameters, N and a dimensionful coupling constant, are capable of satisfying the current observational constraints.

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More information

Published date: 21 January 2010
Organisations: Mathematical Sciences

Identifiers

Local EPrints ID: 341275
URI: http://eprints.soton.ac.uk/id/eprint/341275
ISSN: 1550-7998
PURE UUID: c6204c3e-040b-440b-a851-066a7b377ab1
ORCID for Kostas Skenderis: ORCID iD orcid.org/0000-0003-4509-5472

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Date deposited: 25 Jul 2012 11:16
Last modified: 26 Nov 2021 02:58

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Contributors

Author: Paul McFadden

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