Gravitational Lensing Constraints on Dynamical and Coupled Dark Energy

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.

21 pages, 12 figures; version to appear in JCAP

References in corpus (7)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Challenges for scaling cosmologies
• Self Calibration of Tomographic Weak Lensing for the Physics of Baryons to Constrain Dark Energy
• Tracking quintessence by cosmic shear - Constraints from VIRMOS-Descart and CFHTLS and future prospects
• Interacting Energy Components and Observational $H(z)$ Data
• Gravitational Backreaction of Matter Inhomogeneities
• Constraints on Quintessence From Using Cosmological Data

Cited by in corpus (3)

• The Growth of Structure in Interacting Dark Energy Models
• Constraints on dark energy from baryon acoustic peak and galaxy cluster gas mass measurements
• Dynamical evolutin of quintessence dark energy in collapsing dark matter halos