Generating dark solitons by single photons

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We show that dark solitons in 1D bose systems may be excited by resonant absorption of single quanta of an external ac field. The energy of the quantum $\hbarω$ should be slightly blue-detuned from the energy of a soliton with momentum $\hbar q$, where $q$ is the external field wavenumber $q$. We calculate the absorption cross-section and show that it has power-law dependence on the frequency detuning. This reflects the quantum nature of the absorption process and the orthogonality catastrophe phenomenon associated with it.
4 pages, 3 figures

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Other Condensed Matter, Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/140099

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0710.2910
 http://arxiv.org/abs/0710.2910

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arXiv