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Observational signatures of holographic models of inflation · Around

2010

Observational signatures of holographic models of inflation

McFadden, Paul, Skenderis, Kostas

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We discuss the phenomenology of recently proposed holographic models of inflation, in which the very early universe is non-geometric and is described by a dual three-dimensional quantum field theory (QFT).

We analyze models determined by a specific class of dual QFTs and show that they have the following universal properties: (i) they have a nearly scale invariant spectrum of small amplitude primordial fluctuations, (ii) the scalar spectral index runs as alpha_s = -(n_s-1), (iii) the three-point function of primordial scalar perturbations is of exactly the factorizable equilateral form with f_nl^eq=5/36.
These properties hold irrespective of the details (e.g.
field content, strength of interactions, etc.) of the dual QFT within the class of theories we analyze.

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Then

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Later among the works it cites.
I. Kanitscheider, K. Skenderis and M. Taylor, JHEP 09
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E. Komatsu et al. (WMAP), arXiv:1001.4538; Astrophys. J. Suppl. 180
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2009
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