2007/10/15 by M. Khodas, Khodas, M., A. Kamenev +3 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #Other Condensed Matter (cond-mat.other) #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.other #cond-mat.stat-mech
paper · pdf · doi:10.48550/arxiv.0710.2910
4 pages, 3 figures
arxiv created 2007/10/15 · arxiv updated 2009/12/01
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 ℏω should be slightly blue-detuned from the energy of a soliton with momentum ℏ 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.