167 citations · 637 across the 50 of their papers we have counts for
4 papers · 1 filter
Von Neumann Entropy in QFT
Roberto Longo, Feng Xu
In the framework of Quantum Field Theory, we provide a rigorous, operator algebraic notion of entanglement entropy associated with a pair of open double cones …
On Relative Entropy and Global Index
Feng Xu
Certain duality of relative entropy can fail for chiral conformal net with nontrivial representations. In this paper we quantify such statement by defining a quantity which measure…
Some Results On Relative Entropy in Quantum Field Theory
Feng Xu
We prove that the mutual information for vacuum state as defined by Araki is finite for quantum field theory of free fermions on a Minkowski spacetime of any dimension. In the case…
Comment on the Bekenstein bound
Roberto Longo, Feng Xu
We propose a rigorous derivation of the Bekenstein upper limit for the entropy/information that can be contained by a physical system in a given finite region of space with given f…