Speaker
Paolo Perinotti
(University of Pavia)
Description
We will discuss the notion of causal influence and compare it to signalling. We will then show the conditions on a theory of elementary systems for the two notions to coincide. After introducing quantifiers of signalling and causal influence, we will calculate them for special quantum channels. The discussion will proceed reviewing the main open problems related to the notion of causal influence. We will conclude with a brief illustration of how the partial order introduced by causal influence allows for a backbone graph for an emergent geometry in a computational scenario such as a cellular automaton, confirming that this approach constitutes a viable route to the emergence of mechanical laws in a purely information-theoretic background.
Author
Paolo Perinotti
(University of Pavia)
