Dark states in an integrable XY central spin model
Exactly Solvable and Integrable Systems
2025-06-25 v4 Mathematical Physics
math.MP
Abstract
Eigenstates of central spin models in which the central spin is unentangled with the environment are known as dark states. They have recently been observed in a class of integrable XX models. Here we find that dark states are present in XY models, but only for particular configurations of the central spin magnetic field. We show this via an explicit construction of the Bethe states.
Cite
@article{arxiv.2502.04651,
title = {Dark states in an integrable XY central spin model},
author = {Jaco van Tonder and Jon Links},
journal= {arXiv preprint arXiv:2502.04651},
year = {2025}
}
Comments
21 pages