We study generalized free fields (GFF) from the point of view information measures. first review conformal GFF, their holographic representation, and ambiguities in assignation algebras to regions that arise these theories. Then we mutual (MI) several geometric configurations. The MI displays unusual features at short distance limit: a leading volume term rather than an area term, logarithmic a...

We investigate how entangled inertial Unruh-DeWitt detectors are affected by interaction with a quantum field using nonperturbative method. Inertial in ($3+1$)-dimensional Minkowski spacetime instantaneous switching ($\ensuremath{\delta}$-switching) experience degradation of their initial entanglement as coupling strength scalar increases. Somewhat surprisingly, initially separable or weakly ca...