We investigate opacity, an information-flow privacy property, in a setting where there are two competing agents or adversaries whose objective is to hide their secrets and expose the of other agent. Each agent has only partial information about state system. The can achieve by enabling disabling events from set controllable events. examine different scenarios. In first problem, passive with no ...

A bstract We investigate how quantum dynamics affects the propagation of a scalar field in Lorentzian AdS. work momentum space, which propagator admits two spectral representations (denoted “conformal” and “momentum”) addition to closed-form one, all have simple split structure. Focusing on bubbles, we compute imaginary part self-energy Im? three representations, involves evaluation seemingly v...