Does the Big Rip survive quantization?

TL;DR

This paper investigates whether quantum effects can prevent the Big Rip singularity in a phantom energy dominated cosmological model, finding that different quantization methods suggest the singularity may persist despite quantum considerations.

Contribution

It compares three quantization approaches in a phantom energy cosmology to assess their impact on the Big Rip singularity.

Findings

Quantum effects may not eliminate the Big Rip.

Different quantization methods yield consistent results.

Quantum gravitational effects might not prevent future singularities.

Abstract

It is known that certain quantum cosmological models present quantum behavior for large scale factors. Since quantization can suppress past singularities, it is natural to inquire whether quantum effects can prevent future singularities. To this end, a Friedmann-Robertson-Walker quantum cosmological model dominated by a phantom energy fluid is investigated. The classical model displays accelerated expansion ending in a Big Rip. The quantization is performed in three different ways, which turn out to lead to the same result, namely there is a possibility that quantum gravitational effects could not remove the Big Rip.