The Planck era with a negative cosmological constant and cosmic strings

TL;DR

This paper explores quantum cosmological models with a negative cosmological constant and cosmic strings using the DeBroglie-Bohm interpretation, analyzing trajectories and quantum potentials and comparing with the many-worlds approach.

Contribution

It applies the DeBroglie-Bohm interpretation to quantum Friedmann-Robertson-Walker models with cosmic strings and negative cosmological constant, providing new insights into their quantum behavior.

Findings

Bohm's trajectories differ from classical predictions.

Quantum potentials influence the evolution of the scale factor.

Comparison with many-worlds interpretation highlights interpretational differences.

Abstract

In the present letter, we consider the DeBroglie-Bohm interpretation of quantum Friedmann-Robertson-Walker models in the presence of a negative cosmological constant and cosmic strings. We compute the Bohm's trajectories and quantum potentials for a quantity related to the scale factor. Then, we compare our results with the ones already in the literature, where the many worlds interpretation of the same models was used.