Pairing of few Fermi atoms in one dimension
Quantum Gases
2015-04-16 v3
Abstract
We study a few Fermi atoms interacting through attractive contact forces in a one-dimensional trap by means of numerical exact diagonalization. From the combined analysis of energies and wave functions of correlated ground and excited states we find evidence of BCS-like pairing even for very few atoms. For moderate interaction strength, we reproduce the even-odd oscillation of the separation energy observed in [G. Zuern, A. N. Wenz, S. Murmann, A. Bergschneider, T. Lompe, and S. Jochim, Phys. Rev. Lett. 111, 175302 (2013)]. For strong interatomic attraction the arrangement of dimers in the trap differs from the homogeneous case as a consequence of Pauli blockade in real space.
Keywords
Cite
@article{arxiv.1404.7762,
title = {Pairing of few Fermi atoms in one dimension},
author = {Pino D'Amico and Massimo Rontani},
journal= {arXiv preprint arXiv:1404.7762},
year = {2015}
}
Comments
Major revision to appear in Physical Review A