Chemical Oscillation in Ultracold Chemistry
Abstract
We demonstrate the occurrence of oscillatory reactions in the ultra-cold chemistry of atom-molecular Bose-Einstein condensate. Nonlinear oscillations in the mean-field dynamics occur for a specific range of elliptic modulus, giving rise to both in- and out-phase modulations in the atom-molecule population density. The reaction front velocity is found to be controlled by photoassociation, which also regulates the condensate density. Two distinct pair of in-phase bright localized gap solitons are found as exact solutions, existence of one of which necessarily requires a background. Cnoidal atomic density-waves in a plane wave molecular background are observed in both attractive and repulsive domains. Role of intra- and inter-species interactions on both existence and stability is explicated in the presence of photoassociation.
Keywords
Cite
@article{arxiv.1806.01255,
title = {Chemical Oscillation in Ultracold Chemistry},
author = {Subhrajit Modak and Priyam Das and Challenger Mishra and Prasanta K. Panigrahi},
journal= {arXiv preprint arXiv:1806.01255},
year = {2018}
}