# Comment on "Is a Trineutron Resonance Lower in Energy than a Tetraneutron Resonance?" [arXiv:1612.01502]

## TL;DR

This paper critiques a quantum Monte Carlo study on few-neutron resonant states, highlighting serious methodological shortcomings that lead to misinterpretations of unbound systems.

## Contribution

It provides a critical analysis identifying flaws in previous quantum Monte Carlo results on neutron resonances.

## Key findings

- Highlights inconsistencies in the Monte Carlo study
- Points out methodological shortcomings
- Emphasizes the need for rigorous few-body calculations

## Abstract

The quantum Monte Carlo study [S. Gandolfi, H.-W. Hammer, P. Klos, J. E. Lynn, and A. Schwenk, Phys. Rev. Lett. {\bf 118}, 232501 (2017), arXiv:1612.01502] of few-neutron resonant states provided results incompatible with rigorous few-body calculations. In this Comment we point out serious shortcomings in the work by Gandolfi et al, leading to misinterpretation of unbound few-body systems.