BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:1
UID:UW-Physics-Event-4771
DTSTART:20180427T203000Z
DURATION:PT1H0M0S
DTSTAMP:20260418T154503Z
LAST-MODIFIED:20180416T213057Z
LOCATION:2241 Chamberlin Hall
SUMMARY:When the Universe was one second old\, Physics Department Coll
 oquium\, George Fuller \, UC San Diego
DESCRIPTION:The imminent advent of 30-m class telescopes and Stage-4 c
 osmic microwave<br>
\nbackground observatories promises to give us pre
 cision measurements of key<br>
\nparameters which are set in the very 
 early universe. For example\, we may<br>
\nsoon know to fair precision
  the amount of relic relativistic energy and<br>
\nthe deuterium and h
 elium abundances set during the time when the neutrinos<br>
\nfall out
  of thermal and chemical equilibrium. Given the excitement and<br>
\nf
 erment right now surrounding new ideas in dark matter and other beyond
 <br>
\nstandard model (BSM) physics\, we would very much like to lever
 age these<br>
\ncoming measurements into deeper insights into this epo
 ch\, in effect<br>
\nturning the early universe into a precision BSM p
 hysics laboratory. Doing<br>
\nso\, however\, requires theorists to "r
 aise their game" in modeling the<br>
\nneutrino decoupling epoch. We w
 ill discuss these issues and reveal some<br>
\nsurprising features of 
 the universe when it was roughly one second in age.
URL:https://www.physics.wisc.edu/events/?id=4771
END:VEVENT
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