Polarons in a ferromagnetic spinor Bose-Einstein condensates
Quantum Gases
2021-01-22 v1
Abstract
We investigate the polarons formed by immersing a spinor impurity in a ferromagnetic state of spinor Bose-Einstein condensate. The ground state energies and effective masses of the polarons are calculated in both weak-coupling regime and strong-coupling regime. In the weakly interacting regime the second order perturbation theory is performed. In the strong coupling regime we use a simple variational treatment. The analytical approximations to the energy and effective mass of the polarons are constructed. Especially, a transition from the mobile state to the self-trapping state of the polaron in the strong coupling regime is discussed. We also estimate the signatures of polaron effects in spinor BEC for the future experiments.
Cite
@article{arxiv.2101.08474,
title = {Polarons in a ferromagnetic spinor Bose-Einstein condensates},
author = {Xiao-Lu Yu and Boyang Liu},
journal= {arXiv preprint arXiv:2101.08474},
year = {2021}
}