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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3630
DTSTART:20150302T220000Z
DTEND:20150302T230000Z
DTSTAMP:20260419T142449Z
LAST-MODIFIED:20150130T222434Z
LOCATION:4274 Chamberlin Hall
SUMMARY:Fundamental Physics with Cosmic Microwave Background Polarimet
 ry\, NPAC (Nuclear/Particle/Astro/Cosmo) Forum\, Kam Arnold\, UC San D
 iego\, Center for Astrophysics & Space Sciences
DESCRIPTION:The polarization of the cosmic microwave background (CMB) 
 offers a unique window onto cosmology that can provide information abo
 ut neutrinos\,  dark matter\, dark energy\, large-scale structure form
 ation\, and physics at 10^16 GeV energy scales. Several important meas
 urements of CMB polarization were reported last year\, including the f
 irst-season results from POLARBEAR. With those measurements\, we showe
 d the gravitational lensing of the CMB by large-scale structure using 
 CMB polarization data alone\, and a measurement of a non-zero B-mode p
 olarization angular power spectrum.<br>
\n<br>
\nGoing forward\, our e
 xpansion of POLARBEAR – the Simons Array – will produce more preci
 se observations in multiple spectral bands over a large fraction of th
 e sky. The Simons Array\, powerful as a standalone experiment\, is als
 o a technological pathfinder for both the CMB-S4 experiment described 
 in the Particle Physics Project Prioritization Panel report\, and for 
 the LiteBIRD satellite\, which we recently proposed to NASA as a partn
 er mission with JAXA. Together\, the Simons Array and LiteBIRD will me
 asure the sum of the neutrino masses with the precision necessary to d
 etermine their mass hierarchy\, and make a deep search for the inflati
 onary B-mode signal\, producing a detection with significance > 10 sig
 ma of the B-modes predicted by all large-field inflation models. 
URL:https://www.physics.wisc.edu/events/?id=3630
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