Observables in Extended Percolation Models of Causal Set Cosmology

Details Observables in Extended Percolation Models of Causal Set Cosmology Observables in Extended Percolation Models of Causal Set Cosmology

2005-04-15

arxiv.org/abs/gr-qc/0504069v1

Class.Quant.Grav. 23 (2006) 1381-1390

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

14 pages, 2 figures

Scientific paper

10.1088/0264-9381/23/4/018

Classical sequential growth models for causal sets provide an important step towards the formulation of a quantum causal set dynamics. The covariant observables in a class of these models known as generalised percolation have been completely characterised in terms of physically well-defined ``stem sets'' and yield an insight into the nature of observables in quantum causal set cosmology. We discuss a recent extension of generalised percolation and show that the characterisation of covariant observables in terms of stem sets is also complete in this extension.

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