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SUMMARY:Long-Range Interactions and the Origin of Black Hole Entropy
DTSTART:20260615T060000Z
DTEND:20260615T070000Z
DTSTAMP:20260618T213000Z
UID:indico-event-9365@scitalks.tifr.res.in
DESCRIPTION:Speakers: Nicolo Defenu (ETH Zurich)\n\nIn our quest to unders
 tand the emergence of structure in complex quantum systems\, we investigat
 e the thermodynamic properties of a paradigmatic disordered model. The Sac
 hdev–Ye–Kitaev (SYK) model has established itself as a cornerstone fra
 mework for probing the quantum nature of black holes\, most notably throug
 h its finite residual entropy at zero temperature. In this talk\, I will p
 resent a systematic study of a chain of SYK dots coupled via power-law dec
 aying interactions\, and demonstrate how the range of these couplings gove
 rns the fate of this residual entropy.Tuning from the strongly non-local t
 o the local limit\, the black-hole phase of the isolated SYK model gives w
 ay to a long-range Fermi-liquid regime\, which in turn crosses over into a
  conventional non-Fermi-liquid phase as interactions become short-ranged. 
 These findings establish the interaction range as a natural tuning paramet
 er in black hole thermodynamics and quantum information\, and point toward
  a broader organising principle for non-Fermi-liquid physics in systems wi
 th long-range interactions.\n\nhttps://scitalks.tifr.res.in/event/9365/
LOCATION:AG69 and on Zoom
URL:https://scitalks.tifr.res.in/event/9365/
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