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SUMMARY:Energy Transport across Conformal Interfaces via Holography - Shir
 a Chapman (Ben-Gurion University)
DTSTART:20250903T090000Z
DTEND:20250903T103000Z
UID:TALK235414@talks.cam.ac.uk
DESCRIPTION:Conformal interfaces\, where two conformal field theories (CFT
 s) meet\, offer a rich landscape of physical phenomena. A central observab
 le is the fraction of energy that is reflected or transmitted in a scatter
 ing process at the interface. In two spacetime dimensions this process is 
 universal: the result does not depend on the details of the incoming state
 . Nevertheless\, working out the ratio at strong coupling is far from stra
 ightforward. In higher dimensions the problem becomes even more complicate
 d\, since conformal symmetry is reduced and the outcome can depend on the 
 angular profile of the initial state.\nHolography provides a way to tackle
  these difficulties by mapping strongly coupled CFT dynamics to dual gravi
 tational problems. In this talk\, I will review two holographic calculatio
 ns of reflection and transmission at two-dimensional conformal interfaces:
  one involving a gravitational dual with thin branes\, often encountered i
 n the study of entanglement islands\, and another using smooth domain wall
 s in three-dimensional gravity\, including Janus interfaces. I will then d
 escribe our recent progress towards extending these ideas to higher dimens
 ions\, focusing on how different incoming states can be modelled in the th
 in-brane setup.
LOCATION:Seminar Room 2\, Newton Institute
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