Quantum theory of an accelerating universe

TL;DR

This paper reviews quantum cosmology features in a dark energy universe, explores non-locality in phantom models, and discusses quantum effects near the big rip singularity.

Contribution

It introduces a quantum framework for phantom universes, extending quantum information notions and analyzing the big rip singularity.

Findings

Analytical solutions for quantum cosmology models with dark energy

Extension of quantum information concepts to non-local scenarios

Quantum description of non-chronal regions near the big rip

Abstract

We review some of the well-known features of quantum cosmology, such as the factor ordering problem, the wave function and the density matrix, for a dark energy dominated universe, where analytical solutions can be obtained. For the particular case of the phantom universe, we suggest a quantum system in which the usual notion of locality (non-locality) of quantum information theory have to be extended. In that case, we deal also with a quantum description where the existence of a non-chronal region around the big rip singularity is explicitly accounted for.