Constraining holographic inflation with WMAP
- Department of Physics, Yale University, 217 Prospect Street, New Haven, CT 06520 (United States)
- Institute for Theoretical Physics, Science Park 904, 1090 GL Amsterdam (Netherlands)
- Institute for Theoretical Physics, Gravitation and Astro-Particle Physics Amsterdam, Korteweg-de Vries Institute for Mathematics, Science Park 904, 1090 GL Amsterdam (Netherlands)
In a class of recently proposed models, the early universe is strongly coupled and described holographically by a three-dimensional, weakly coupled, super-renormalizable quantum field theory. This scenario leads to a power spectrum of scalar perturbations that differs from the usual empirical ΛCDM form and the predictions of generic models of single field, slow roll inflation. This spectrum is characterized by two parameters: an amplitude, and a parameter g related to the coupling constant of the dual theory. We estimate these parameters, using WMAP and other astrophysical data. We compute Bayesian evidence for both the holographic model and standard ΛCDM and find that their difference is not significant, although ΛCDM provides a somewhat better fit to the data. However, it appears that Planck will permit a definitive test of this holographic scenario.
- OSTI ID:
- 22277735
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2011, Issue 09; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
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