2009/08/31 by D. M. Gangardt, Alex Kamenev, A. Kamenev
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #Strong Light-Matter Interactions #cond-mat.quant-gas #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevlett.104.190402
published as Phys.Rev.Lett.104:190402,2010 · 5 pages, 1 figure. Accepted for publication in PRL.
arxiv created 2010/04/14 · openalex publication_date 2010/05/12 · arxiv updated 2010/05/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Unless protected by the exact integrability, solitons are subject to dissipative forces, originating from a thermally fluctuating background. At low enough temperatures T background fluctuations should be considered as being quantized which enables us to calculate finite lifetime of the solitons τ∼T(-4). We also find that the coherent nature of the quantum fluctuations leads to long-range interactions between the solitons mediated by the superradiation. Our results are of relevance to current experiments with ultracold atoms, while the approach may be extended to solitons in other media.