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arXiv · 1806.01255

Chemical Oscillation in Ultracold Chemistry

Subhrajit Modak·Priyam Das·Challenger Mishra·Prasanta K. Panigrahi
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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.

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Subhrajit Modak, Priyam Das, Challenger Mishra, Prasanta K. Panigrahi. 2018-06-04. Chemical Oscillation in Ultracold Chemistry. https://arxiv.org/abs/1806.01255

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