Towards quantum gravity: a framework for probabilistic theories with non-fixed causal structure
Towards quantum gravity: a framework for probabilistic theories with non-fixed causal structure
General relativity is a deterministic theory with non-fixed causal structure. Quantum theory is a probabilistic theory with fixed causal structure. In this paper, we build a framework for probabilistic theories with non-fixed causal structure. This combines the radical elements of general relativity and quantum theory. We adopt an operational methodology …