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SUMMARY:CMB Lensing: Fundamental Physics from Maps of the Invisible - Blak
 e Sherwin\, DAMTP
DTSTART:20171122T141500Z
DTEND:20171122T151500Z
UID:TALK87441@talks.cam.ac.uk
CONTACT:David Marsh
DESCRIPTION:Dark matter not only forms an invisible cosmic scaffolding wit
 hin which galaxies form\, its distribution in the universe also contains a
  wealth of information about neutrinos\, dark energy\, and physics at the 
 earliest times. Analyses of gravitational lensing in the cosmic microwave 
 background (CMB) allow this matter distribution to be directly seen and ma
 pped\, resulting in powerful probes of fundamental physics. In the first p
 art of my talk\, I will describe ongoing analysis and theory work to extra
 ct the lensing signal from the AdvACT and Simons Observatory CMB experimen
 t data and derive precise cosmological constraints. Lensing is not only a 
 signal\, however\, but also a source of noise that limits how much we can 
 learn about inflation via CMB B-mode polarization. In the second part of m
 y talk\, I will show recent work in the area of delensing - removing the l
 ensing effect to reveal the primordial sky and potential signals from infl
 ation.
LOCATION:MR2\, Centre for Mathematical Sciences
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