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DTSTAMP:20180717T205534Z
LAST-MODIFIED:20171113T171946Z
DTSTART:20171115T204500Z
DTEND:20171115T214500Z
UID:event1792@bu.edu
URL:http://physics.bu.edu/events/show/1792
SUMMARY:"Bulk Phase Shift\, CFT Regge Limit and Einstein Gravity"
DESCRIPTION:Featuring Alexander Zhiboedov\, Harvard University\n\nPart of t
he HET Seminar Series.\n\nThe bulk phase shift\, related to a CFT four-poin
t function\, describes two-to-two scattering at fixed impact parameter in t
he dual AdS spacetime. We describe its properties for a generic CFT and the
n focus on large N CFTs with classical bulk duals. We compute the bulk phas
e shift for vector operators using Regge theory. We use causality and unita
rity to put bounds on the bulk phase shift. The resulting constraints bound
three-point functions of two vector operators and the stress tensor in ter
ms of the gap of the theory. Similar bounds should hold for any spinning op
erator in a CFT. Holographically this implies that in a classical gravitati
onal theory any non-minimal coupling to the graviton\, as well as any other
particle with spin greater than or equal to two\, is suppressed by the mas
s of higher spin particles.
LOCATION:SCI 595\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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