https://doi.org/10.1140/epja/s10050-021-00417-8
Review
The quest for light multineutron systems
1
LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050, Caen, France
2
Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405, Orsay, France
Received:
13
November
2020
Accepted:
19
February
2021
Published online:
25
March
2021
The long history of the research concerning the possible existence of bound or resonant states in light multineutron systems, essentially 
n and 
n, is reviewed. Both the experimental and the theoretical points of view have been considered, with the aim of showing a clear picture of all the different detection and calculation techniques that have been used, with particular emphasis in the issues that have been found. Finally, some aspects of the present and future research in this field are discussed.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021
