Dynamics of quantum causal structures

Understand

It was recently suggested that causal structures are both dynamical, because of general relativity, and indefinite, due to quantum theory.

• The process matrix formalism furnishes a framework for quantum mechanics on indefinite causal structures, where the order between operations of local laboratories is not definite (e.g.
• one cannot say whether operation in laboratory A occurs before or after operation in laboratory B).
• Here we develop a framework for "dynamics of causal structures", i.e.