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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:08060162  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Large Scale Structure as a Probe of Gravitational Slip
Speaker(s): Scott Daniel
Abstract: Many modified gravity schemes predict a non-zero difference (``gravitational slip'') between the Newtonian and longitudinal perturbed metric potentials. Such a slip would affect the growth of large scale structure without altering the expansion history of the universe. We quantify the slip with a new parameter varpi, show the effect of non-zero varpi on the growth of cosmic overdensities, and constrain its value using CMB and weak lensing data.
Date: 05/06/2008 - 3:30 pm
Collection: PASCOS 08
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