Multipole Analysis of Radio-Frequency Reactions in Ultra-Cold Atoms
Quantum Gases
2012-10-12 v2 Atomic Physics
Abstract
Using the multipole expansion we analyze photo induced reactions in an ultra-cold atomic gas composed of identical neutral bosons. While the Frank-Condon factor dominates the photo induced spin-flip reactions, we have found that for frozen-spin process where the atomic spins are conserved the reaction rate is governed by the monopole and the quadrupole terms. Consequently, the dependence of the frozen-spin reaction rate on the photon wave number acquires an extra factor in comparison to the spin-flip process. Comparing the relative strength of the and quadrupole modes in dimer photoassociation we predict that the mutual importance of these two modes changes with temperature and scattering length.
Keywords
Cite
@article{arxiv.1207.5936,
title = {Multipole Analysis of Radio-Frequency Reactions in Ultra-Cold Atoms},
author = {Betzalel Bazak and Evgeny Liverts and Nir Barnea},
journal= {arXiv preprint arXiv:1207.5936},
year = {2012}
}