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The essence of quintessence and the cost of compression
Bruce A. Bassett, Pier Stefano Corasaniti, Martin Kunz
Standard two-parameter compressions of the infinite dimensional dark energy model space show crippling limitations even with current SN-Ia data. Firstly they cannot cope with rapid…
The foundations of observing dark energy dynamics with the Wilkinson Microwave Anisotropy Probe
P. S. Corasaniti, M. Kunz, D. Parkinson +2
Detecting dark energy dynamics is the main quest of current dark energy research. Addressing the issue demands a fully consistent analysis of CMB, large scale structure and SN-Ia d…
Dark Energy in Chains
David Parkinson, Bruce A. Bassett, Edmund J. Copeland +2
Dark energy affects the CMB through its perturbations and affects both CMB and Sn-Ia through its background evolution. Using recent CMB and Sn-Ia data sets, together with the most…
A Tale of Two Distances
Martin Kunz, Bruce A. Bassett
There are two basic ways to measure physical distances in cosmology: One based on standard candles and one based on standard rulers. Comparing current data for each method allows u…
WMAP constraints on inflationary models with global defects
Neil Bevis, Mark Hindmarsh, Martin Kunz
We use the cosmic microwave background angular power spectra to place upper limits on the degree to which global defects may have aided cosmic structure formation. We explore this…