7 papers
The two-sided Bogoliubov inequality in von Neumann algebras conceptualizes the free energy--quantum correlations link
Benedikt M. Reible, Albert Much, Rainer Verch +2
The quantum-mechanical two-sided Bogoliubov inequality provides upper and lower bounds for the free energy required to separate a system of interacting particles into independent s…
A UV-Finite Ryu-Takayanagi Relation from Relative Entropy in AdS/CFT
Albert Much, Philipp Dorau, Leonardo Sangaletti +1
We establish a Ryu-Takayanagi (RT) relation in AdS/CFT using \emph{relative entropy} as the central object, in place of the ultraviolet-divergent von Neumann entanglement e…
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…
Probing non-equilibrium steady states of the Klein-Gordon field with Unruh-DeWitt detectors
Albert Georg Passegger, Rainer Verch
We calculate the transition rate of an Unruh-DeWitt detector coupled to a non-equilibrium steady state (NESS) of a free massless scalar field on four-dimensional Minkowski spacetim…
Lecture Notes on Operator Algebras and Quantum Field Theory
Rainer Verch
Lecture notes prepared for the EMS--IAMP Spring School ``Symmetries and Measurement in Quantum Field Theory''. This set of lecture notes covers four lectures: 1. Operator Algebras…
Microlocal Analysis of a Deformed Quantum Field Theory
Rishabh Ballal, Albert Much, Rainer Verch
A deformation technique, known as the warped convolution, takes quantum fields in Minkowski spacetime to quantum fields in noncommutative Minkowski space-time. Since a quantum fiel…