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SUMMARY:Mysterious properties of holographic entanglement - Matthew Headri
 ck (Brandeis University)
DTSTART:20260219T130000Z
DTEND:20260219T140000Z
UID:TALK242440@talks.cam.ac.uk
CONTACT:Klaas Parmentier
DESCRIPTION:The Ryu-Takayanagi holographic entanglement entropy formula is
  a cornerstone of our modern understanding of holography and quantum gravi
 ty. It predicts that static holographic states have many peculiar properti
 es\, expressed as inequalities obeyed by entanglement entropies. These ine
 qualities remain deeply mysterious\, both on conceptual and technical leve
 ls. Can we decode what they’re telling us about the entanglement structu
 re of semiclassical states in quantum gravity? For that\, we need to know 
 if the inequalities are obeyed in time-dependent states\, in other words b
 y the covariant Hubeny-Rangamani-Takayanagi formula. This is itself a fasc
 inating problem in general relativity. We will review the state of the art
  on these questions\, including the attempts to resolve them and the evide
 nce that has been gathered so far.
LOCATION:Potter room
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