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SUMMARY:Stringy effects in SYK scrambling
DTSTART:20230919T103000
DTEND:20230919T113000
DTSTAMP:20260502T050049Z
UID:16ed280dfd34e5a8a45d9860825e4a0a1ac4cacba77d8a0b4cc4c978
CATEGORIES:Conferences - Seminars
DESCRIPTION:Mark Mezei (University of Oxford)\nAbstract: \nIt has been pr
 oposed that the exponential decay and subsequent power law saturation of o
 ut-of-time-order correlation functions can be universally described by col
 lective 'scramblon' modes. We develop this idea from a path integral persp
 ective and apply the formalism to the large-q SYK chain that is amenable t
 o analytical treatment at finite coupling\, away from maximal chaos. We id
 entify the relevant scramblon modes\, derive their effective action\, and 
 their coupling to operators\, thus constructing an effective description o
 f scrambling. The final results can be matched in detail to stringy correc
 tions to the gravitational eikonal S-matrix in holographic CFTs\, includin
 g a stringy Regge trajectory\, bulk to boundary propagators\, and multi-st
 ring effects that are unexplored holographically.\n\nThe talk is based on:
  Changha Choi\, Felix M. Haehl\, Márk Mezei & Gábor Sárosi \, JHE
 P 03 (2023) 142\n\n 
LOCATION:BSP 727 https://plan.epfl.ch/?room==BSP%20727
STATUS:CONFIRMED
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