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Dynamics of interac...
Dynamics of interacting dark soliton stripes
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- Kevrekidis, P. G. (författare)
- Univ Massachusetts, Dept Math & Stat, Amherst, MA 01003 USA.
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- Wang, Wenlong (författare)
- KTH,Kondenserade materiens teori
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- Theocharis, G. (författare)
- Univ Maine, UMR CNRS 6613, Lab Acoust, Ave Olivier Messiaen, F-72000 Le Mans, France.
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- Frantzeskakis, D. J. (författare)
- Univ Athens, Dept Phys, Athens 15784, Greece.
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- Carretero-Gonzalez, R. (författare)
- San Diego State Univ, Nonlinear Dynam Syst Grp, Computat Sci Res Ctr, San Diego, CA 92182 USA.;San Diego State Univ, Dept Math & Stat, San Diego, CA 92182 USA.
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- Anderson, B. P. (författare)
- Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA.
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Univ Massachusetts, Dept Math & Stat, Amherst, MA 01003 USA Kondenserade materiens teori (creator_code:org_t)
- AMER PHYSICAL SOC, 2019
- 2019
- Engelska.
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Ingår i: Physical Review A: covering atomic, molecular, and optical physics and quantum information. - : AMER PHYSICAL SOC. - 2469-9926 .- 2469-9934. ; 100:3
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- In the present work we examine the statics and dynamics of multiple parallel dark soliton stripes in a two-dimensional Bose-Einstein condensate. Our principal goal is to study the effect of the interaction between the stripes on the transverse instability of the individual stripes. The cases of two-, three-, and four-stripe states are studied in detail. We use a recently developed adiabatic invariant formulation to derive a quasianalytical prediction for the stripe equilibrium position and for the Bogoliubov-de Gennes spectrum of excitations of stationary stripes. We subsequently test our predictions against numerical simulations of the full two-dimensional Gross-Pitaevskii equation. We find that the number of unstable eigenmodes increases as the number of stripes increases due to (unstable) relative motions between the stripes. Their corresponding growth rates do not significantly change, although for large chemical potentials, the larger the stripe number, the larger the maximal instability growth rate. The instability induced dynamics of multiple stripe states and their decay into vortices are also investigated.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- NARDO B
- 1992
- PHYSICAL REVIEW LETTERS
- V68
- P1730
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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