Cosmological constant and renormalization of gravity

TL;DR

This paper extends a topological model addressing the cosmological constant problem by incorporating quantum correction divergences and explores its implications for cosmology.

Contribution

It introduces an extended topological gravity model that absorbs quantum divergences, offering a novel approach to the cosmological constant problem.

Findings

Vacuum energy divergences can be absorbed into scalar field redefinition.

The extended model provides a new framework for quantum corrections in cosmology.

Potential implications for resolving the cosmological constant problem.

Abstract

In arXiv:1601.02203 and arXiv:1702.07063, we have proposed a topological model with a simple Lagrangian density and have tried to solve one of the cosmological constant problems. The Lagrangian density is the BRS exact and therefore the model can be regarded as a topological theory. In this model, the divergence of the vacuum energy coming from the quantum corrections from matters can be absorbed into the redefinition of the scalar field. In this paper, we consider the extension of the model in order to apply the mechanism to other kinds of divergences coming from the quantum correction and consider the cosmology in an extended model.