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arXiv · 2106.09604

Emission of particles from a parametrically driven condensate in a one-dimensional lattice

L. Q. Lai·Y. B. Yu·Erich J. Mueller
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Abstract

Motivated by recent experiments, we calculate particle emission from a Bose-Einstein condensate trapped in a single deep well of a one-dimensional lattice when the interaction strength is modulated. In addition to pair emission, which has been widely studied, we observe single-particle emission. Within linear response, we are able to write closed-form expressions for the single-particle emission rates and reduce the pair emission rates to one-dimensional integrals. The full nonlinear theory of single-particle emission is reduced to a single variable integrodifferential equation, which we numerically solve.

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L. Q. Lai, Y. B. Yu, Erich J. Mueller. 2021-06-17. Emission of particles from a parametrically driven condensate in a one-dimensional lattice. https://doi.org/10.1103/physreva.104.033308

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