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SUMMARY:Alexandre Belin - Random Statistics of OPE coefficients and Euclid
ean Wormholes.
DTSTART;VALUE=DATE-TIME:20200713T120000Z
DTEND;VALUE=DATE-TIME:20200713T140000Z
DTSTAMP;VALUE=DATE-TIME:20210510T085303Z
UID:indico-event-936872@indico.cern.ch
DESCRIPTION:Zoom virtual seminar: Click here to enter room\n\n \n\nAbstr
act: \n\nI will review a puzzle appearing in the AdS/CFT correspondence wh
ere products of CFT partition functions don’t factorize when computed fr
om the bulk due to the presence of Euclidean wormholes. It is currently an
open question on whether these wormholes should contribute to the path in
tegral for definite microscopic CFTs where no disorder average is taken. I
n an attempt to explain the appearance of these wormholes\, I will propose
an ansatz for OPE coefficients of chaotic CFTs that generalizes the Eigen
state Thermalization Hypothesis and treats heavy states as random variable
s. Applying this ansatz to compute the square of a genus-2 partition funct
ion will reproduce the contribution of the genus-2 wormhole described by M
aoz and Maldacena many years ago. Finally\, I will argue that gravitationa
l computations using the low-energy effective action can only ever capture
the random nature of the OPE coefficients.\n\nhttps://indico.cern.ch/even
t/936872/
LOCATION:CERN Zoom only
URL:https://indico.cern.ch/event/936872/
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