Many-fermion quantum entanglement in strange metals and black holes

Speaker: 
Subir Sachdev
Institution: 
Harvard University
Date: 
Thursday, May 21, 2026
Time: 
3:30 pm
Location: 
ISEB 1010

[EQI] Eddleman Quantum Institute Seminar Series

Abstract: Quantum entanglement among many fermions lies at the heart of several frontier problems in modern physics. The Sachdev-Ye-Kitaev (SYK) model provides a solvable setting in which strong, all-to-all entanglement produces a non-quasiparticle state with no particle-like excitations and exhibits universal "Planckian" dissipation. I will discuss how insights from the SYK model are informing our understanding of the strange metal phase in cuprate high-temperature superconductors and other quantum materials. Strikingly, these same ideas have also guided recent progress in determining the low-energy quantum density of states of charged and rotating black holes, revealing deep connections between strongly correlated matter and quantum gravity.

Host: 
Steven White