Abstract
Weak gravitational lensing of background galaxies by intervening matter directly probes the mass distribution in the Universe. This distribution is sensitive to both the dark energy and neutrino mass. We examine the potential of lensing experiments to measure features of both simultaneously. Focusing on the radial information contained in a future deep survey, we find that the expected () error on a neutrino mass is 0.1 eV, if the dark-energy parameters are allowed to vary. The constraints on dark-energy parameters are similarly restrictive, with errors on of 0.09.
- Received 11 December 2002
DOI:https://doi.org/10.1103/PhysRevLett.91.041301
©2003 American Physical Society