Searching for a holographic connection between dark energy and the low l CMB multipoles
By K. Enqvist, S. Hannestad, M. Sloth. 2004
143 citations recorded by the source corpus.
We consider the angular power spectrum in a finite universe with different boundary conditions and perform a fit to the CMB, LSS and supernova data. A finite universe could be the consequence of a holographic constraint, giving rise to an effective IR cut-off at the future event horizon. In such a model there is a cosmic duality relating the dark energy equation of state and the power spectrum, which shows a suppression and oscillatory behaviour that is found to describe the low l features extremely well. However, much of the discussion here will also apply if we actually live inside an expanding bubble that describes our universe. The best fit to the CMB and LSS data turns out to be better than in the standard ΛCDM model, but when combined with the supernova data, the holographic model becomes disfavoured. We speculate on the possible implications.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/e819ffe4842c2786268cb629a39bb9c3b8f4116d
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Citations in the corpus
- Constraints on holographic dark energy from the latest supernovae, galaxy clustering, and cosmic microwave background anisotropy observations (2007, methodology): “The holographic dark energy model has been tested and constrained by various astronomical observations, such as SNIa [60], CMB [61, 62, 63], combination of SNIa, CMB and LSS [64], the X-ray gas mass fraction of galaxy clusters [65], and the differential ages of passively evolving galaxies [66].”