Bose–einstein Condensates With Laser-Induced Dipole–dipole Interactions Beyond the Mean-Field Approach

Kurizki, Gershon; Mazets, I. E.; O’Dell, D. H. J.; Schleich, Wolfgang P.

doi:10.1142/s0217979204024550

Cited by 16 publications

(11 citation statements)

References 20 publications

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“…Lastly, it is relevant to mention that a similar situation may be expected in BEC with long-range interactions induced by the resonant laser illumination [63]. However, the consideration of that setting is beyond the scope of the present work.…”

Section: Introduction and The Settingmentioning

confidence: 75%

Matter-wave solitons supported by field-induced dipole-dipole repulsion with spatially modulated strength

Liu

Pang

et al. 2013

Phys. Rev. A

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We demonstrate the existence of one and two-dimensional bright solitons in the Bose-Einstein condensate with repulsive dipole-dipole interactions induced by a combination of dc and ac polarizing fields, oriented perpendicular to the plane in which the BEC is trapped, assuming that the strength of the fields grows in the radial (r) direction faster than r 3 . Stable tightly confined 1D and 2D fundamental solitons, twisted solitons in 1D, and solitary vortices in 2D are found in a numerical form. The fundamental solitons remain robust under the action of an expulsive potential, which is induced by the interaction of the dipoles with the polarizing field. The confinement and scaling properties of the soliton families are explained analytically. The Thomas-Fermi approximation is elaborated for fundamental solitons. The mobility of the fundamental solitons is limited to the central area. Stable 1D even and odd solitons are also found in the setting with a double-well modulation function, along with a regime of Josephson oscillations.

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Section: Introduction and The Settingmentioning

confidence: 75%

Matter-wave solitons supported by field-induced dipole-dipole repulsion with spatially modulated strength

Liu

Pang

et al. 2013

Phys. Rev. A

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“…[16] examined the quasi-two-dimensional limit of this problem. Roton-like dispersion curves and supersolid-like phases had earlier been identified in quasi-1D gases, where the dipole dipole interaction is induced by strong laser light [20,21,22,23].…”

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confidence: 90%

Radial and Angular Rotons in Trapped Dipolar Gases

2007

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We study Bose-Einstein condensates with purely dipolar interactions in oblate traps. We find that the condensate always becomes unstable to collapse when the number of particles is sufficiently large. We analyze the instability, and find that it is the trapped-gas analogue of the "roton-maxon" instability previously reported for a gas that is unconfined in 2D. In addition, we find that under certain circumstances the condensate wave function attains a biconcave shape, with its maximum density away from the center of the gas. These biconcave condensates become unstable due to azimuthal excitation--an angular roton.

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“…It is not our purpose in this invited presentation to convince the reader of the intrinsic interest of a quantum degenerate gas of dipolar particles. This task has been admirably accomplished in several recent reviews [1,2,3], and continues to play out in laboratories and calculations the world over. Suffice it to say that these developments are likely to have an impact on chemistry, condensed matter physics, precision measurements, and quantum information science.…”

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confidence: 97%

How does a dipolar Bose-Einstein condensate collapse?

Bohn

Wilson²,

Ronen³

2009

Laser Phys.

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Bose–einstein Condensates With Laser-Induced Dipole–dipole Interactions Beyond the Mean-Field Approach

Abstract: We present a brief review of our recent results concerning non-mean-field effects of laser-induced dipole–dipole interactions on static and dynamical properties of atomic Bose–Einstein condensates.

Cited by 16 publications

References 20 publications

Matter-wave solitons supported by field-induced dipole-dipole repulsion with spatially modulated strength

Matter-wave solitons supported by field-induced dipole-dipole repulsion with spatially modulated strength

Radial and Angular Rotons in Trapped Dipolar Gases

How does a dipolar Bose-Einstein condensate collapse?

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