np spin correlations in the deuteron ground state
Nuclear Theory
2025-06-23 v1 Quantum Physics
Abstract
The deuteron is the simplest atomic nucleus made of two particles - a proton and a neutron. In this work, we study how their spins are quantum entangled with each other. We study two cases: when the deuteron is in a fixed projection of total angular momentum, and when it exists in a superposition of all projections. Our findings show that the spins are most entangled when the total projection is zero, and that strong entanglement still exists even when all spin states are superposed.
Cite
@article{arxiv.2506.16621,
title = {np spin correlations in the deuteron ground state},
author = {Ashutosh Singh and Ankit Kumar Das and Ankit Kumar and P. Arumugam},
journal= {arXiv preprint arXiv:2506.16621},
year = {2025}
}
Comments
7 pages, 5 figures. Also relevant to quantum information theory