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BEGIN:VEVENT
DTSTAMP:20261021T002836Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20100329T163000Z
DTEND:20100329T173000Z
UID:event587@bu.edu
URL:http://physics.bu.edu/internal/events/show/587
SUMMARY:Observing the Dimensionality of our Parent Vacuum
DESCRIPTION:Featuring Surjeet Rajendran\, MIT\n\nPart of the HET Seminar Se
	ries.\n\nAbstract:\nIt seems generic to have vacua with lower dimensionalit
	y than ours. We consider\nthe possibility that the observable universe orig
	inated in a transition from\none of these vacua. Such a universe has anisot
	ropic spatial curvature. This may\nbe directly observable through its late-
	time effects on the CMB if the last\nperiod of slow-roll inflation was not 
	too long. These affect the entire sky\,\nleading to correlations which pers
	ist up to the highest CMB multipoles\, thus\nallowing a conclusive detectio
	n above cosmic variance. Further\, this\nanisotropic curvature causes diffe
	rent dimensions to expand at different rates.\nThis leads to other potentia
	lly observable signals including a quadrupolar\nanisotropy in the CMB which
	 limits the size of the curvature. Conversely\, if\nisotropic curvature is 
	observed it may be evidence that our parent vacuum was\nat least 3+1 dimens
	ional. Such signals could reveal our history of\ndecompactification\, provi
	ding evidence for the existence of vastly different\nvacua.
LOCATION: \, \, 
STATUS:CONFIRMED
CLASS:PUBLIC
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