3 papers
hep-th2026
Causality and realizability of local operations in quantum field theory
Jan Mandrysch, Robin Simmons, Miguel Navascues
As noted by Sorkin, regarding quantum instruments whose Kraus operators are localizable within some spacetime region as operations accessible therein leads to superluminal communic…
quant-ph2025
Relative entropy for locally squeezed states
Daniela Cadamuro, Markus B. Fröb, Dimitrios Katsinis +1
Relative entropy serves as a fundamental measure of state distinguishability in both quantum information theory and relativistic quantum field theory. Despite its conceptual import…
hep-th2024
Quantum Field Measurements in the Fewster-Verch Framework
Jan Mandrysch, Miguel Navascués
The Fewster-Verch (FV) framework provides a local and covariant approach for defining measurements in quantum field theory (QFT). Within this framework, a probe QFT represents the…