搜索结果: 1-15 共查到“dark solitons”相关记录21条 . 查询时间(0.088 秒)
Ring dark solitons and vortex necklaces in Bose-Einstein condensates
Dark soliton condensate cluster vortex pair oscillation
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2014/12/29
We introduce the concept of ring dark solitons in Bose-Einstein condensates. We show that relatively shallow rings are not subject to the snake instability, but a deeper ring splits into a robust ring...
Stability of dark solitons in a Bose-Einstein condensate trapped in an optical lattice
Dark soliton stability bose-einstein condensate magnetic parabolic well optical lattice discrete nonlinear schrodinger equation
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2014/12/29
We investigate the stability of dark solitons (DSs) in an effectively one-dimensional Bose-Einstein condensate in the presence of the magnetic parabolic trap and an optical lattice (OL). The analysis ...
Dynamics of shallow dark solitons in a trapped gas of impenetrable bosons
Nonlinear excited state dynamics bose gas five non-linear dynamic
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2014/12/29
The dynamics of linear and nonlinear excitations in a Bose gas in the Tonks-Girardeau regime with longitudinal confinement are studied within a mean-field theory of quintic nonlinearity. A reductive p...
Oscillations of dark solitons in trapped Bose-Einstein condensates
Oscillation parabolic equation the dark soliton amplitude attenuation radiation dark soliton
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2014/12/29
We consider a one-dimensional defocusing Gross–Pitaevskii equation with a parabolic potential. Dark solitons oscillate near the center of the potential trap and their amplitude decays due to radiative...
Periodic oscillations of dark solitons in parabolic potentials
Parabola discrete dynamical system Hermite function
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2014/12/25
We reformulate the Gross–Pitaevskii equation with an external parabolic potential as a discrete dynamical system, by using the basis of Hermite functions. We consider small amplitude stationary soluti...
Dark solitons in discrete lattices: Saturable versus cubic nonlinearities
Dark soliton nonlinear lattice nonlinear lattice the scene of the model
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2014/12/25
In the present work, we study dark solitons in dynamical lattices with the saturable nonlinearity and compare them to those in lattices with the cubic nonlinearity. This comparison has become especial...
Experimental observation of oscillating and interacting matter wave dark solitons
Oscillation dark soliton well pairs of bose-einstein condensate harmonic trap particle image
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2014/12/25
We report on the generation, subsequent oscillation and interaction of a pair of matter-wave dark solitons. These are created by releasing a Bose-Einstein condensate from a double well potential into ...
Stability of discrete dark solitons in nonlinear Schrodinger lattices
The dark soliton stability of the harvest discrete nonlinear schrodinger lattice
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2014/12/25
This is the pre-published version harvested from arXiv. The published version is located at http://pre.aps.org/abstract/PRE/v74/i6/e067601.
Dark solitons in external potentials
Dark soliton dark soliton potential power
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2014/12/25
We consider the persistence and stability of dark solitons in the Gross–Pitaevskii (GP) equation with a small decaying potential. We show that families of black solitons with zero speed originate from...
Stability of discrete dark solitons in nonlinear Schrödinger lattices
Discrete dark soliton discrete nonlinear schrodinger equation
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2014/12/25
We obtain new results on the stability of discrete dark solitons bifurcating from the anti-continuum limit of the discrete nonlinear Schrödinger equation, following the analysis of our previous p...
Collisional-inhomogeneity-induced generation of matter-wave dark solitons
Dark soliton condensate numerical simulation of the space is not uniform shear wave scattering length one-dimensional BEC 2 d
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2014/12/24
We propose an experimentally relevant protocol for the controlled generation of matter-wave dark solitons in atomic Bose–Einstein condensates (BECs). In particular, using direct numerical simulations,...
Multiple atomic dark solitons in cigar-shaped Bose-Einstein condensates
Dark soliton dynamics condensate the particles
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2014/12/24
We consider the stability and dynamics of multiple dark solitons in cigar-shaped Bose-Einstein condensates. Our study is motivated by the fact that multiple matter-wave dark solitons may naturally for...
Controlling the transverse instability of dark solitons and nucleation of vortices by a potential barrier
Inhibition of dark soliton stripes instability two-dimensional condensate one dimensional structure
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2014/12/24
We study possibilities to suppress the transverse modulational instability (MI) of dark-soliton stripes in two-dimensional Bose-Einstein condensates (BEC’s) and self-defocusing bulk optical waveguides...
Dark solitons in cigar-shaped Bose-Einstein condensates in double-well potentials
Dark soliton statics dynamics bose-einstein condensate
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2014/12/24
We study the statics and dynamics of dark solitons in a cigar-shaped Bose-Einstein condensate confined in a double-well potential. Using a mean-field model with a noncubic nonlinearity, appropriate to...
Matter-Wave Dark Solitons: Stochastic versus Analytical Results
Dark soliton similar dynamics atom condensate stochastic simulation
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2014/12/24
The dynamics of dark matter-wave solitons in elongated atomic condensates are discussed at finite temperatures. Simulations with the stochastic Gross-Pitaevskii equation reveal a noticeable, experimen...