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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:1
UID:UW-Physics-Event-8187
DTSTART:20230208T190000Z
DTEND:20230208T203000Z
DTSTAMP:20260408T025159Z
LAST-MODIFIED:20230202T163420Z
LOCATION:5280 Chamberlin 
SUMMARY:New Physics with Gravitational Waves \, Theory Seminar (High E
 nergy/Cosmology)\, Jan Schuette-Engel\, University of Illinois
DESCRIPTION:The thermal plasma in the early universe produced a guaran
 teed stochastic gravitational wave (GW) background\, which peaks today
  in the microwave regime and was dubbed the cosmic gravitational micro
 wave background (CGMB). I show that the CGMB spectrum encodes fundamen
 tal information about particle physics and gravity at ultra high energ
 ies. In particular\, one can determine from the CGMB spectrum the maxi
 mum temperature of the universe and the effective degrees of freedom a
 t the maximum temperature. I point out that quantum gravity effects ar
 ise in the CGMB spectrum as corrections to the leading order result. A
 t the end of the talk I discuss detection prospects of the CGMB.
URL:https://www.physics.wisc.edu/events/?id=8187
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