An Underlying Theory for Gravity

TL;DR

This paper explores the possibility that gravity is a derived interaction from a deeper underlying theory, which could be quantum or non-quantum, challenging traditional views and drawing parallels with thermodynamics.

Contribution

It proposes a new conceptual framework relating classical gravity to an underlying fundamental theory, emphasizing the potential for a non-quantum or quantum basis.

Findings

No direct evidence of quantum nature of gravity found

Draws analogy between gravity and thermodynamics

Suggests gravity may emerge from deeper degrees of freedom

Abstract

A new direction to understand gravity has recently been explored by considering classical gravity to be a derived interaction from an underlying theory. This underlying theory would involve new degrees of freedom at a deeper level and it would be structurally different from classical gravitation. It may conceivably be a quantum theory or a non-quantum theory. The relation between this underlying theory and Einstein's gravity is similar to the connection between statistical mechanics and thermodynamics. We discuss the apparent lack of evidence of any quantum nature of gravity in this context.