Dynamical instability of 3D stationary and traveling planar dark solitons.

Autor:	Mithun T; Department of Mathematics and Statistics, University of Massachusetts, Amherst, MA 01003-4515, United States of America., Fritsch AR; Joint Quantum Institute, National Institute of Standards and Technology, and University of Maryland, Gaithersburg, MD 20899, United States of America., Spielman IB; Joint Quantum Institute, National Institute of Standards and Technology, and University of Maryland, Gaithersburg, MD 20899, United States of America., Kevrekidis PG; Department of Mathematics and Statistics, University of Massachusetts, Amherst, MA 01003-4515, United States of America.
Jazyk:	angličtina
Zdroj:	Journal of physics. Condensed matter : an Institute of Physics journal [J Phys Condens Matter] 2022 Nov 09; Vol. 51 (1). Date of Electronic Publication: 2022 Nov 09.
DOI:	10.1088/1361-648X/ac9e36
Abstrakt:	Here we revisit the topic of stationary and propagating solitonic excitations in self-repulsive three-dimensional (3D) Bose-Einstein condensates by quantitatively comparing theoretical analysis and associated numerical computations with our experimental results. Motivated by numerous experimental efforts, including our own herein, we use fully 3D numerical simulations to explore the existence, stability, and evolution dynamics of planar dark solitons. This also allows us to examine their instability-induced decay products including solitonic vortices and vortex rings. In the trapped case and with no adjustable parameters, our numerical findings are in correspondence with experimentally observed coherent structures. Without a longitudinal trap, we identify numerically exact traveling solutions and quantify how their transverse destabilization threshold changes as a function of the solitary wave speed. (Creative Commons Attribution license.)
Databáze:	MEDLINE
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