What is ab initio in nuclear theory?

TL;DR

This paper explores the evolving meaning of 'ab initio' in nuclear theory, reviewing its history and discussing its current role in uncertainty quantification.

Contribution

It provides a historical overview and a contemporary interpretation of 'ab initio' in nuclear physics, linking it to uncertainty analysis.

Findings

'Ab initio' has broadened in meaning over time.

The paper clarifies the current interpretation of 'ab initio'.

It discusses the role of 'ab initio' methods in uncertainty quantification.

Abstract

Ab initio has been used as a label in nuclear theory for over two decades. Its meaning has evolved and broadened over the years. We present our interpretation, briefly review its historical use, and discuss its present-day relation to theoretical uncertainty quantification.