2009/07/31 by Paul McFadden, Kostas Skenderis · 3 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Computer science #Cosmology #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Holography #Limit (mathematics) #Mathematical physics #Mathematics #Observable #Physics #Quantization (signal processing) #Quantum mechanics #Scalar (mathematics) #Spectral density #Theoretical physics #astro-ph.CO #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.81.021301
published as Phys.Rev.D81:021301,2010 · 5 pages; new figure displaying predicted spectral running.
arxiv created 2010/01/13 · openalex publication_date 2010/01/21 · arxiv updated 2010/05/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.