Phenomenological Quantum Gravity

TL;DR

Recent advances have enabled experimental tests of quantum gravity features, allowing us to explore the interplay of quantum physics and gravity despite longstanding theoretical challenges.

Contribution

This paper reviews emerging approaches that enable experimental investigation of quantum gravity phenomena, bridging the gap between quantum physics and gravity.

Findings

Experimental domains where quantum physics and gravity cohabit have been identified.

New approaches allow testing characteristic features of quantum gravity.

Progress in probing quantum gravity experimentally despite theoretical difficulties.

Abstract

If the history of science has taught us anything, it's that persistence and creativity makes the once impossible possible. It has long been thought experimental tests of quantum gravity are impossible. But during the last decade, several different approaches have been proposed that allow us to test, if not the fundamental theory of quantum gravity itself, so at least characteristic features this theory can have. For the first time we can probe experimentally domains in which quantum physics and gravity cohabit, in spite of our failure so far to make a convincing marriage of them on a theoretical level.