Effective Equations for Repulsive Quasi-One Dimensional Bose-Einstein Condensates Trapped with Anharmonic Transverse Potentials
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DOI: 10.1002/andp.201700352
Abstract: One-dimensional nonlinear Schr\"odinger equations are derived to describe the axial effective dynamics of cigar-shaped atomic repulsive Bose-Einstein condensates trapped with anharmonic transverse potentials. The accuracy of these equations in the perturbative, Thomas-Fermi, and crossover regimes… read more here.
Keywords: bose einstein; anharmonic transverse; one dimensional; einstein condensates ... See more keywords
Bose–Einstein Condensation Beyond the Gross–Pitaevskii Regime
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DOI: 10.1007/s00023-020-01004-1
Abstract: We consider N bosons in a box with volume one, interacting through a two-body potential with scattering length of the order \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$N^{-1+\kappa }$$\end{document}N-1+κ, for \documentclass[12pt]{minimal} \usepackage{amsmath}… read more here.
Keywords: bose einstein; usepackage; document; documentclass 12pt ... See more keywords
Entanglement in Bose-Einstein Condensates with One-Body Losses
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DOI: 10.1007/s10773-017-3321-y
Abstract: We investigate quantum entanglement in two mutually non-interacting and spatially non-overlapping Bose-Einstein condensates in two harmonic potentials with one-body losses. One-body losses play an important role in the dynamical process of generating quantum entanglement. The… read more here.
Keywords: bose einstein; body losses; einstein condensates; entanglement bose ... See more keywords
Squeezed Atom Laser for Bose-Einstein Condensate with Minimal Length
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DOI: 10.1007/s10773-019-04190-9
Abstract: We study a protocol for constructing a squeezed atom laser for a model originating from the generalized uncertainty principle. We show that the squeezing effects arising from such systems do not require any squeezed light… read more here.
Keywords: einstein condensate; bose einstein; atom laser; laser bose ... See more keywords
Effects of Higher Order Interaction on Vortex Formation in Bose-Einstein Condensates
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DOI: 10.1007/s10773-021-04801-4
Abstract: We consider theoretically the formation of vortex in rotating Bose-Einstein condensates (BECs) with higher order interaction (HOI). Our results are obtained from the twodimensional Gross-Pitaevskii equation. As the first step, for the certain number vortices,… read more here.
Keywords: formation; einstein condensates; bose einstein; higher order ... See more keywords
Vortex Shedding from an Object Moving in Superfluid $$^4\hbox {He}$$4He at mK Temperatures and in a Bose–Einstein Condensate
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DOI: 10.1007/s10909-016-1653-2
Abstract: Vortex shedding from a microsphere oscillating in superfluid $$^4\hbox {He}$$4He at mK temperatures is compared with that from a laser beam moving in a Bose–Einstein condensate as observed by other authors. In particular, in either… read more here.
Keywords: vortex shedding; einstein condensate; bose einstein; hbox 4he ... See more keywords
Common Features in Multi-species Bose–Einstein Condensates and the Origin of the Inherent Critical Phenomena
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DOI: 10.1007/s10909-018-2072-3
Abstract: A general approach is proposed to solve the coupled Gross–Pitaevskii equations (CGP) for K-species Bose–Einstein condensates under the Thomas–Fermi approximation. We aim at finding out the common features of these condensates different in K. In… read more here.
Keywords: bose einstein; multi species; features multi; einstein condensates ... See more keywords
Merging of Rotating Bose–Einstein Condensates
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DOI: 10.1007/s10909-018-2110-1
Abstract: Merging of isolated Bose–Einstein condensates (BECs) is an important topic due to its relevance to matter-wave interferometry and the Kibble–Zurek mechanism. Many past research focused on merging of BECs with uniform initial phases. In our… read more here.
Keywords: bose einstein; number; einstein condensates; merging rotating ... See more keywords
Waves in a Bose–Einstein Condensate of Atoms with a Dipole Moment
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DOI: 10.1007/s10909-019-02272-w
Abstract: Based on the modified Gross–Pitaevskii equation for atoms with intrinsic dipole moments, which accounts for the relaxation of a condensate, the dipole–dipole interaction and the interaction of atoms with the electromagnetic field, the propagation of… read more here.
Keywords: einstein condensate; condensate atoms; bose einstein; atoms dipole ... See more keywords
A Regularized Newton Method for Computing Ground States of Bose–Einstein Condensates
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DOI: 10.1007/s10915-017-0412-0
Abstract: In this paper, we compute ground states of Bose–Einstein condensates (BECs), which can be formulated as an energy minimization problem with a spherical constraint. The energy functional and constraint are discretized by either the finite… read more here.
Keywords: regularized newton; minimization problem; bose einstein; states bose ... See more keywords
Surface Critical Phenomena of a Free Bose Gas with Enhanced Hopping at the Surface
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DOI: 10.1007/s10955-018-2198-3
Abstract: We study the Bose–Einstein condensation in a tight-binding model with a hopping rate enhanced only on a surface. We show that this model exhibits two different critical phenomena depending on whether the hopping rate on… read more here.
Keywords: bose einstein; surface; hopping rate; surface critical ... See more keywords