Joint Theory Seminar
Speaker: Aron Wall
Title: Quantum Causal Dynamics without Absolute Space or Time
Host: Steve Carlip
Room: 432
Abstract: I will describe a discrete model of spacetime which is
quantum-mechanical, causal, and background free. The kinematics is
described by networks whose vertices are labelled with arrows. These
networks can be evolved forwards (or backwards) in time by using
unitary replacement rules. The arrow structure permits one to define
dynamics without using an absolute time parameter. Based on
arXiv:1201.2489.
