Holography for cosmology
- 21 January 2010
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 81 (2)
- https://doi.org/10.1103/physrevd.81.021301
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.Other Versions
This publication has 17 references indexed in Scilit:
- FIVE-YEARWILKINSON MICROWAVE ANISOTROPY PROBEOBSERVATIONS: COSMOLOGICAL INTERPRETATIONThe Astrophysical Journal Supplement Series, 2009
- Real-Time Gauge/Gravity DualityPhysical Review Letters, 2008
- Domain-wall/cosmology correspondence in AdS/dS supergravityJournal of High Energy Physics, 2007
- Pseudo-supersymmetry and a tale of alternate realitiesJournal of High Energy Physics, 2007
- Pseudo-supersymmetry and the domain-wall/cosmology correspondenceJournal of Physics A: Mathematical and Theoretical, 2007
- Hidden Supersymmetry of Domain Walls and CosmologiesPhysical Review Letters, 2006
- Correlation Functions in Holographic RG FlowsJournal of High Energy Physics, 2004
- Non-gaussian features of primordial fluctuations in single field inflationary modelsJournal of High Energy Physics, 2003
- Naked singularities in dilatonic domain wall space-timesPhysical Review D, 1995
- Nonlinear evolution of long-wavelength metric fluctuations in inflationary modelsPhysical Review D, 1990