%0 Journal Article %1 McFadden2010 %A McFadden, Paul %A Skenderis, Kostas %D 2010 %K holography inflation %T Observational signatures of holographic models of inflation %U http://arxiv.org/abs/1010.0244 %X 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. The ratio of tensors-to-scalars is determined by the field content of the dual QFT and does not satisfy the slow-roll consistency relations. Observations from the Planck satellite should be able to confirm or exclude these models.

@article{McFadden2010, abstract = { 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. The ratio of tensors-to-scalars is determined by the field content of the dual QFT and does not satisfy the slow-roll consistency relations. Observations from the Planck satellite should be able to confirm or exclude these models. }, added-at = {2010-10-05T09:12:50.000+0200}, author = {McFadden, Paul and Skenderis, Kostas}, biburl = {https://www.bibsonomy.org/bibtex/2f96f5c8eaf19652fe79318508ecc9dc2/jpschaar}, description = {Observational signatures of holographic models of inflation}, interhash = {74b3d509109a6c36c11899557d3d21ae}, intrahash = {f96f5c8eaf19652fe79318508ecc9dc2}, keywords = {holography inflation}, note = {cite arxiv:1010.0244 Comment: 4 pp, 2 figs}, timestamp = {2010-10-05T09:12:50.000+0200}, title = {Observational signatures of holographic models of inflation}, url = {http://arxiv.org/abs/1010.0244}, year = 2010 }