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BEGIN:VEVENT
DTSTAMP:20260729T143210Z
LAST-MODIFIED:20190409T160225Z
DTSTART:20190417T153000Z
DTEND:20190417T163000Z
UID:event2102@bu.edu
URL:http://physics.bu.edu/internal/events/show/2102
SUMMARY:Entropy\, Entanglement and Swampland Bounds in DS/dS
DESCRIPTION:Featuring Andreas Karch\, University of Washington\n\nPart of t
	he HET Seminar Series.\n\nWe calculate the entanglement entropy of the de-S
	itter (dS) static patch in the context of the DS/dS correspondence. Interes
	tingly\, we find that there exists a one parameter family of bulk minimal s
	urfaces that all have the same area. Two of them have appeared earlier in t
	he literature. All of them correctly calculate the dS entropy. One surface 
	yields the entanglement between the two different CFTs that provide the hol
	ographic dual of the bulk DS geometry. The second surface describes the ent
	anglement across the horizon in the boundary static patch. The other surfac
	es describe a mixture of these two concepts. We also show that in the prese
	nce of extra matter fields the former entanglement entropy always exceeds t
	he dS entropy. We interpret this result in the context of entropy bounds in
	 de Sitter space and the swampland program.
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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