Year: 2000
Type: article
Abstract: Quantum causal histories are defined to be causal sets with Hilbert spaces attached to each event and local unitary evolution operators. The reflexivity, antisymmetry and transitivity properties of a causal set are preserved in the quantum history as conditions on the evolution operators. A quantum causal history in which transitivity holds can be treated as `directed' topological quantum field theory. Two examples of such histories are described.
Source: Classical and Quantum Gravity
Author: Fotini Markopoulou
Institution: Pennsylvania State University
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2078146385