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Gravitational Lensing Constraints on Dynamical and Coupled Dark Energy

Authors
  • La Vacca, G.
  • Colombo, L. P. L.
Type
Published Article
Publication Date
Apr 09, 2008
Submission Date
Mar 11, 2008
Identifiers
DOI: 10.1088/1475-7516/2008/04/007
Source
arXiv
License
Yellow
External links

Abstract

Upcoming Weak Lensing (WL) surveys can be used to constrain Dark Energy (DE) properties, namely if tomographic techniques are used to improve their sensitivity. In this work, we use a Fisher matrix technique to compare the power of CMB anisotropy and polarization data with tomographic WL data, in constraining DE parameters. Adding WL data to available CMB data improves the detection of all cosmological parameters, but the impact is really strong when DE--DM coupling is considered, as WL tomography can then succeed to reduce the errors on some parameters by factors >10.

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