Universal correlations along the BEC-BCS crossover
Quantum Gases
2022-11-09 v1
Abstract
We show that the long-distance behavior of the two-body density correlation functions and the Cooper-pair probability density of a balanced mixture of a two-component Fermi gas at , is universal along the BEC-BCS crossover. Our result is demonstrated by numerically solving the mean-field BCS model for different finite short-range atomic interaction potentials. We find an analytic expression for the correlation length in terms of the chemical potential and the energy gap at zero momentum.
Cite
@article{arxiv.2211.03832,
title = {Universal correlations along the BEC-BCS crossover},
author = {J. C. Obeso-Jureidini and G. A. Dominguez-Castro and E. Neri and R. Paredes and V. Romero-Rochin},
journal= {arXiv preprint arXiv:2211.03832},
year = {2022}
}
Comments
6 pages, 3 figures