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VERSION:2.0
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BEGIN:VEVENT
DTSTAMP:20260920T192830Z
LAST-MODIFIED:20190409T162657Z
DTSTART:20190410T153000Z
DTEND:20190410T163000Z
UID:event2101@bu.edu
URL:http://physics.bu.edu/internal/events/show/2101
SUMMARY:Low dimensional de Sitter quantum gravity
DESCRIPTION:Featuring Kristan Jensen\, SFSU\n\nPart of the HET Seminar Seri
	es.\n\nI will discuss quantum mechanical aspects of Jackiw-Teitelboim gravi
	ty on nearly two-dimensional de Sitter spacetime\, and pure de Sitter gravi
	ty in three dimensions. In both cases there are only edge modes\, and I wil
	l present boundary effective actions for these degrees of freedom. These in
	clude boundary gravitons on each connected component of the boundary in add
	ition to topological degrees of freedom. These actions allow us to compute 
	gravitational observables\, like the wavefunction of the universe at future
	 infinity or gravitational scattering\, at loop level and in some cases to 
	all orders in perturbation theory. If time allows\, I will also discuss som
	e tempting connections with random matrix theory and the Sachdev-Ye-Kitaev 
	model.
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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