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hep-th2026
A UV-Finite Refinement of the Ryu-Takayanagi Relation in AdS/CFT
Albert Much, Philipp Dorau, Leonardo Sangaletti +1
We establish a refined Ryu--Takayanagi (RT) relation in AdS/CFT using \emph{relative entropy} as the central object, in place of the ultraviolet-divergent von Neumann entan…
hep-th2026
Noncommutative QFT and Relative Entropy on Axisymmetric Bifurcate Killing Horizons
Philipp Dorau, Albert Much, Rainer Verch
We construct a deformed algebraic quantum field theory on bifurcate Killing horizons in stationary axisymmetric spacetimes. The deformation is generated by the commuting actions of…
hep-th2025★ 5 cited
From Quantum Relative Entropy to the Semiclassical Einstein Equations
Philipp Dorau, Albert Much
We provide arguments indicating that the semiclassical Einstein equations follow from quantum relative entropy and its proportionality to an area variation. Using modular theory, w…