Composite boson signature in the interference pattern of atomic dimer condensates
Abstract
We predict the existence of high frequency modes in the interference pattern of two condensates made of fermionic-atom dimers. These modes, which result from fermion exchanges between condensates, constitute a striking signature of the dimer composite nature. From the 2-coboson spatial correlation function, that we derive analytically, and the Shiva diagrams that visualize many-body effects specific to composite bosons, we identify the physical origin of these high frequency modes and determine the conditions to see them experimentally by using bound fermionic-atom pairs trapped on optical lattice sites. The dimer granularity which appears in these modes comes from Pauli blocking that prevents two dimers to be located at the same lattice site.
Keywords
Cite
@article{arxiv.1710.10567,
title = {Composite boson signature in the interference pattern of atomic dimer condensates},
author = {Shiue-Yuan Shiau and Aurélia Chenu and Monique Combescot},
journal= {arXiv preprint arXiv:1710.10567},
year = {2022}
}
Comments
10+7 pp, 3 figures. v2: version accepted for publication in New J. Phys