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CATEGORIES:Theoretical Physics Colloquium
SUMMARY:CMB Lensing: Fundamental Physics from Maps of the 
 Invisible - Blake Sherwin\, DAMTP
DTSTART;TZID=Europe/London:20171122T141500
DTEND;TZID=Europe/London:20171122T151500
UID:TALK87441AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/87441
DESCRIPTION:Dark matter not only forms an invisible cosmic sca
 ffolding within which galaxies form\, its distribu
 tion in the universe also contains a wealth of inf
 ormation about neutrinos\, dark energy\, and physi
 cs at the earliest times. Analyses of gravitationa
 l lensing in the cosmic microwave background (CMB)
  allow this matter distribution to be directly see
 n and mapped\, resulting in powerful probes of fun
 damental physics. In the first part of my talk\, I
  will describe ongoing analysis and theory work to
  extract the lensing signal from the AdvACT and Si
 mons Observatory CMB experiment data and derive pr
 ecise cosmological constraints. Lensing is not onl
 y 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
  my talk\, I will show recent work in the area of 
 delensing - removing the lensing effect to reveal 
 the primordial sky and potential signals from infl
 ation.
LOCATION:MR2\, Centre for Mathematical Sciences
CONTACT:David Marsh
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