Scalar-Tensor Theories and Quantum Gravity

TL;DR

This paper proposes a scalar-tensor framework that unifies quantum effects and gravity, suggesting both are geometrical features influencing space-time's causal structure and scale.

Contribution

It introduces a novel scalar-tensor approach to integrate quantum effects with gravitational theory within a unified geometric framework.

Findings

Quantum effects can determine the conformal degree of freedom.

Gravity influences the causal structure of space-time.

Quantum effects set the scale of space-time.

Abstract

Recently, it was shown that the quantum effects of the matter, could be used to determine the conformal degree of freedom of the space-time metric. So both gravity and quantum are geometrical features. Gravity determines the causal structure of the space-time, while quantum determines the scale of the space-time. In this article, it is shown that it is possible to use the scalar-tensor framework to build a unified theory in which both quantum and gravitational effects are present.