Probing dark energy with future surveys

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Title: Probing dark energy with future surveys
Authors: Trotta, R
Item Type: Working Paper
Abstract: I review the observational prospects to constrain the equation of state parameter of dark energy and I discuss the potential of future imaging and redshift surveys. Bayesian model selection is used to address the question of the level of accuracy on the equation of state parameter that is required before explanations alternative to a cosmological constant become very implausible. I discuss results in the prediction space of dark energy models. If no significant departure from w=-1 is detected, a precision on w of order 1% will translate into strong evidence against fluid-like dark energy, while decisive evidence will require a precision of order 10^-3.
URI: http://hdl.handle.net/10044/1/28646
Copyright Statement: © 2006 The Author
Keywords: astro-ph
Notes: 5 pages, 1 figure, prepared for the proceedings of the conference "Cosmology, galaxy formation and astroparticle physics on the pathway to the SKA", Oxford, April 10-12 2006
Appears in Collections:Physics
Astrophysics
Faculty of Natural Sciences



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