Hi all,
tomorrow we'll hear from Ämin Baumeler from USI in Lugano. Here's the title and abstract:
Title: Classical correlations without causal order
Abstract: An often made assumption in physical theories is the existence of a global time. If one relaxes this assumption and requires local validity of some theory and logical consistency only, then a larger set of correlations can be obtained — correlations without predefined causal order. Such theories have the advantage that causal relations emerge from the observed correlations. Here, we look at classical correlations without predefined causal order (local validity of classical probability theory is assumed) and give a geometric characterization of processes that lead to such correlations.
Best,
-joe