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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-1515
DTSTART:20090417T193000Z
DURATION:PT1H0M0S
DTSTAMP:20260311T070200Z
LAST-MODIFIED:20090416T195947Z
LOCATION:5280 Chamberlin Hall
SUMMARY:Implications of a Scalar Dark Force for Terrestrial Experiment
 s\, Theory/Phenomenology Seminar\, Sonny Mantry\, UW-Madison Physics D
 ept.
DESCRIPTION:Does Dark Matter (DM) fall at a different rate than ordina
 ry matter under gravity?  Such a violation of the Weak Equivalence Pri
 nciple (WEP) could arise<br>
\nthrough ultralight scalars mediating a 
 new long range "dark force" between DM particles.  Such scenarios can 
 arise\, for example\, through DM-quintessence<br>
\ninteractions or in
  non-universal scalar-tensor theories of gravity invoked to explain as
 pects of dark energy. The presence of a dark force would affect galact
 ic dynamics\, the CMB spectrum\, and large scale structure formation t
 ypically requiring it to be weaker than gravity.  Furthermore\, a dark
  force will be communicated to ordinary matter through quantum effects
  as long as the DM is not sterile.  This allows one to further probe d
 ark forces through terrestrial experiments such as Eotvos tests of the
  WEP\, DM-direct-detection experiments\, and collider signals.
URL:https://www.physics.wisc.edu/events/?id=1515
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