Publisher’s Note: Probing the Scale Invariance of the Inflationary Power Spectrum in Expanding Quasi-Two-Dimensional Dipolar Condensates [Phys. Rev. Lett. 
<b>118</b>
, 130404 (2017)]

Chä, Seok-Yeong; Fischer, Uwe R.

doi:10.1103/physrevlett.118.179901

Cited by 12 publications

(8 citation statements)

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“…where the DDI is repulsive for ε dd > 0 and attractive for ε dd < 0 when a 1 > 0. Obviously the total interaction coefficient between atoms for component 1 can be expressed by (1 + ε dd )β 11 . Thus one can obtain and control different ground-state phases by varying the DDI strength ε dd , the SOC strength k, and the interaction strengths β 11 , β 22 and β 12 .…”

Section: Modelmentioning

confidence: 99%

“…Recent experimental and theoretical studies of dipolar quantum gases with chromium, 4) dysprosium, 5) and erbium atoms 6) show that DDI can have pronounced effects on the meanfield ground states, Bogoliubov spectra, many-body stationary states, and dynamics of the BECs or degenerate Fermi gases. [7][8][9][10][11][12][13][14][15] These remarkable effects include ferrosuperfluid, 4) droplet crystals, 9) dipolar superfluid, 14) flat Landau levels, 16) and roton mode in a dipolar quantum gas. 17) On the other hand, spin-orbit coupled quantum gases have also become one of the focuses in cold atom physics in recent years.…”

Section: Introductionmentioning

confidence: 99%

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Ground States of Dipolar Spin–Orbit-Coupled Bose–Einstein Condensates in a Toroidal Trap

2019

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We investigate the ground-state structures of dipolar spin-orbit-coupled Bose-Einstein condensates in a toroidal trap. Combined effects of dipole-dipole interaction (DDI) and spin-orbit coupling (SOC) on the ground states of the system are discussed. A ground-state phase diagram is obtained as a function of the SOC and DDI strengths. As two new degrees of freedom, the DDI and SOC can be used to obtain the desired ground-state phases and to control the phase transition between various ground states. In particular, the system displays exotic topological structures and spin textures, such as half-quantum vortex, vortex string, vortex necklace, complex vortex lattice including giant vortex and hidden antivortex chains, different skyrmions, meron (half-skyrmion)-antimeron (half-antiskyrmion) necklace, and composite meron-antimeron lattice.

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Section: Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ground States of Dipolar Spin–Orbit-Coupled Bose–Einstein Condensates in a Toroidal Trap

2019

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“…On the other hand, quantum gases with magnetic dipole-dipole interaction (DDI), especially the BECs with DDI, have also drawn much attention both experimentally [35][36][37][38] and theoretically [39][40][41][42][43][44][45][46][47][48] in recent years. Relevant studies on spinor BECs with DDI have shown that the interplay between the short-range spin-exchange interaction and the long-range anisotropic DDI can lead to rich topological defects, spin textures and spin dynamics [39,40].…”

Section: Introductionmentioning

confidence: 99%

Topological defects in rotating spin-orbit-coupled dipolar spin-1 Bose-Einstein condensates

Su,

Wang,

et al. 2020

Preprint

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We consider the topological defects and spin structures of spin-1 Bose-Einstein condensates (BECs) with spin-orbit coupling (SOC) and dipole-dipole interaction (DDI) in a rotating harmonic plus quartic trap. The combined effects of SOC, DDI and rotation on the ground-state phases of the system are analyzed. Our results show that for fixed rotation frequency structural phase transitions can be achieved by adjusting the magnitudes of the SOC and DDI. A ground-state phase diagram is given as a function of the SOC and DDI strengths. It is shown that the system exhibits rich quantum phases including vortex string phase with isolated density peaks (DPs), triangular (square) vortex lattice phase with DPs, checkerboard phase, and stripe phase with hidden vortices and antivortices. For given SOC and DDI strengths, the system can display pentagonal vortex lattice with DPs, vortex necklace with DPs, and exotic topological structure composed of multi-layer visible vortex necklaces, a hidden giant vortex and hidden vortex necklaces, depending on the rotation frequency. In addition, the system sustains fascinating novel spin textures and skyrmion excitations, such as an antiskyrmion pair, antiskyrmion-half-antiskyrmion (antiskyrmion-antimeron) cluster, skyrmion-antiskyrmion lattice, skyrmion-antiskyrmion cluster, skyrmion-antiskyrmion-meron-antimeron lattice, double-layer half-antiskyrmion necklaces, and composite giant-antiskyrmion-antimeron necklaces.

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“…When the electric or magnetic DDI of the ultracold quantum gas cannot be neglected, we must consider the dipolar effects between atoms or molecules. Essentially, the DDI is long-range and anisotropic, which has important influences on the static structures, dynamic properties and stability of ultracold quantum gases [4][5][6][7][8][9][10][11][12][13]. Relevant studies show that DDI can lead to more novel, fascinating and even unexpected effects than the conventional contact s-wave interaction in quantum gases [1][2][3]14].…”

Section: Introductionmentioning

confidence: 99%

Ground-state properties of spin–orbit-coupled dipolar Bose–Einstein condensates with in-plane gradient magnetic field

Li¹,

Wang²,

Shi³

et al. 2019

J. Phys. B: At. Mol. Opt. Phys.

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We investigate the ground-state properties of spin-orbit-coupled pseudo-spin-1/2 dipolar Bose-Einstein condensates (BECs) in a two-dimensional harmonic trap and an in-plane quadrupole field. The effects of spin-orbit coupling (SOC), dipole-dipole interaction (DDI) and the in-plane quadrupole field on the ground-state structures and spin textures of the system are systematically analyzed and discussed. For fixed SOC and DDI strengths, the system shows a quadrupole stripe phase with a half-quantum vortex, or a quadrupole Thomas-Fermi phase with a half-quantum antivortex for small quadrupole field strength, depending on the ratio between inter-and intraspecies interaction. As the quadrupole field strength enhances, the system realizes a ring mixed phase with a hidden vortex-antivortex cluster rather than an ordinary giant vortex in each component. Of particular interest, when the strengths of DDI and quadrupole field are fixed, strong SOC leads to the formation of criss-crossed vortex string structure. For given SOC and quadrupole field, the system for strong DDI displays a sandwich-like structure, or a special delaminated structure with a prolate antivortex in the spin-up component. In addition, typical spin textures for the ground states of the system are analyzed. It is shown that the system sustains exotic topological structures, such as a hyperbolic spin domain wall, skyrmion-half-antiskyrmion-antiskyrmion lattice, half-skyrmionskyrmion-half-antiskyrmion lattice, and a drum-shaped antimeron.

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Publisher’s Note: Probing the Scale Invariance of the Inflationary Power Spectrum in Expanding Quasi-Two-Dimensional Dipolar Condensates [Phys. Rev. Lett. 118 , 130404 (2017)]

Abstract: This corrects the article DOI: 10.1103/PhysRevLett.118.130404.

Cited by 12 publications

References 0 publications

Ground States of Dipolar Spin–Orbit-Coupled Bose–Einstein Condensates in a Toroidal Trap

Ground States of Dipolar Spin–Orbit-Coupled Bose–Einstein Condensates in a Toroidal Trap

Topological defects in rotating spin-orbit-coupled dipolar spin-1 Bose-Einstein condensates

Ground-state properties of spin–orbit-coupled dipolar Bose–Einstein condensates with in-plane gradient magnetic field

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