Article
Engineering, Mechanical
Zhi Tan, Huilin Gong, Bo Zhu, Honghua Zhong, Shufang Hu
Summary: We study the construction and dynamics of 2D anisotropic vortex-bright soliton in spinor dipolar Bose-Einstein condensates. The optical lattice and dipole-dipole interaction support stable anisotropic VB solitons even for small values of norm. By adjusting the depth of the lattice, one can control the stability of the solitons. Additionally, the collision dynamics of kicked solitons can lead to a transition from the bright component to the vortex component.
NONLINEAR DYNAMICS
(2023)
Article
Physics, Multidisciplinary
Xin Li, Peng Gao, Zhan-Ying Yang, Wen-Li Yang
Summary: By numerically studying the interaction dynamics of bright solitons in one-dimensional dipolar Bose-Einstein condensates, we found that under different dipolar strengths, the solitons can merge into a breathing wave and then split or propagate continuously, causing asymmetry. The change in initial phase difference has distinct effects on soliton interaction.
Article
Physics, Condensed Matter
Y. Y. Bao, S. R. Li, Y. H. Liu, T. F. Xu
Summary: We study two types of bright solitons in zero and non-zero detuning spin-orbit-coupled (SOC) Bose-Einstein condensates in fractional effect by variational and imaginary-time evolution method. The results show that the variation of SOC with fractional kinetic energy operator affects the existence and form of solitons. In particular, we found that SOC strength ? = 1.0 could be a transition point. In other words, for ? < 1.0 and ? ? 1.0, the soliton states and pseudo-spin polarization in non-zero detuning show opposite changes. In addition, moving bright solitons with zero and non-zero detuning are studied.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Optics
Gautam Hegde, Sandra M. Jose, Rejish Nath
Summary: This study analyzes the dynamics of population and spin densities in spin-1 spinor condensates resulting from the spatial overlap between two distinct polar bright solitons. The findings show that the dynamics of overlapping solitons in scalar condensates display various phenomena such as soliton fusion, atomic switching, and repulsive dynamics. The study also reveals that overlapping polar solitons can emerge as ferromagnetic solitons, oscillatons, or a combination of both in the presence of spin-dependent interactions.
Article
Physics, Multidisciplinary
Gen Zhang, Li-Zheng Lv, Peng Gao, Zhan-Ying Yang
Summary: In this study, we numerically investigate the breathing dynamics induced by the collision of bright solitons in an attractive binary dipolar Bose-Einstein condensates. We identify three special breathing structures and describe their characteristics in terms of breathing frequency, maximum breathing amplitude, and lifetime. We find that these characteristics can be manipulated by varying the atomic number and interspecies scattering length. Additionally, the collision of two special breathing structures leads to more abundant breathing dynamics.
Article
Optics
Ratheejit Ghosh, Chinmayee Mishra, Luis Santos, Rejish Nath
Summary: Gases of doubly dipolar particles, with both magnetic and electric dipole moments, offer intriguing novel possibilities. The interplay between doubly dipolar interactions, quantum stabilization, and external confinement results in a rich ground-state physics of supersolids and incoherent droplet arrays in doubly dipolar condensates. Our study reveals novel possibilities for engineering quantum droplets and droplet supersolids, including supersolid-supersolid transitions and the realization of supersolid arrays of pancake droplets.
Article
Optics
Thudiyangal Mithun, Kenichi Kasamatsu, Bishwajyoti Dey, Panayotis G. Kevrekidis
Summary: The study investigates quantum turbulence in miscible binary Bose-Einstein condensates and the formation of vortex-antidark structures under certain conditions. The interplay of parameter asymmetry and trap frequencies affects the dynamics of turbulent condensates, leading to the emergence of unique spectral features related to incompressible kinetic energy. Additionally, the impact of intercomponent interaction on like-signed vortex cluster formation in an elliptical steep-wall trap is examined, revealing the decay of clustered configurations due to intercomponent coupling.
Article
Optics
P. Sturmer, M. Nilsson Tengstrand, R. Sachdeva, S. M. Reimann
Summary: This study investigates the stationary structures and breathing mode behavior of a two-dimensional self-bound binary Bose droplet using both an analytical approach and numerical solutions. It is found that the super-Gaussian ansatz is more effective in describing the system properties compared to the Gaussian ansatz. The preference for the breathing mode over the self-evaporating process is observed for large nonrotating droplets, while the results differ based on the ansatz for small self-bound systems.
Article
Mathematics, Interdisciplinary Applications
Chunyan Li, Vladimir V. Konotop, Boris A. Malomed, Yaroslav V. Kartashov
Summary: This study reveals the mechanism of linear and nonlinear localization induced by spatially periodic modulation of spin-orbit coupling. It shows that specific chemical potential can lead to localized solitons or vortex solitons, and their stability strongly depends on the potential's location in the gaps.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Mathematics, Applied
K. Sakkaravarthi, R. Babu Mareeswaran, T. Kanna
Summary: This study investigates matter-wave bright soliton molecules in spin-1 Bose-Einstein condensates using three-component Gross-Pitaevskii equations with non-autonomous nonlinearities that can be controlled by Feshbach resonance management. It demonstrates the generation of bright bound soliton molecules through a controlled velocity resonance mechanism. The results reveal the effects of time-varying nonlinearities on the soliton molecules and their modulation during propagation, as well as significant changes in their properties and profiles.
PHYSICA D-NONLINEAR PHENOMENA
(2023)
Article
Physics, Multidisciplinary
Juntao He, Ji Lin
Summary: This research explores the existence and stability of stationary and moving bright solitons in spin-orbit-coupled spin-1 Bose-Einstein condensates in the presence of an external Zeeman field. The relation between the bright solitons and the energy spectrum as well as the atomic interactions is investigated. The stability analysis reveals interesting dynamics in the collisions of stable bright solitons with different velocities.
NEW JOURNAL OF PHYSICS
(2023)
Article
Optics
Aowei Yang, Guilong Li, Xunda Jiang, Zhiwei Fan, Zhaopin Chen, Bin Liu, Yongyao Li
Summary: In this study, we investigate the characteristics of two-dimensional isotropic quantum droplets (QDs) in dipolar binary Bose-Einstein condensates (BECs). The QDs are supported by the competition between the two-dimensional Lee-Huang-Yang (LHY) term and isotropic dipole-dipole interactions (DDIs). Unlike the three-dimensional systems, the LHY term in the two-dimensional binary system behaves logarithmically, exhibiting both attractive and repulsive effects. We model these QDs using numerical and theoretical methods and discuss their characteristic parameters, as well as studying centripetal and oblique collisions between moving QDs.
Article
Physics, Multidisciplinary
A. Rana, A. Pendse, S. Wuester, S. Panda
Summary: This paper proposes using dipolar Bose-Einstein condensates as a laboratory quantum simulation platform to study the residual features of fluctuation spectra during cosmic inflation. By controlling the expansion speed, the degree of final residual anisotropy can be adjusted and studied.
NEW JOURNAL OF PHYSICS
(2023)
Article
Physics, Applied
Yun Liu, Yong-Kai Liu
Summary: In this study, the properties of bright solitons in spin-1 three components BEC with STMC were discussed using analytical and numerical solutions. The study also revealed spontaneous motion in their dynamic evolution, which differs from spin-orbit-coupled solitons.
MODERN PHYSICS LETTERS B
(2021)
Article
Materials Science, Multidisciplinary
Yu-Xi Xu, Yuan Zhao, Qi-Hong Huang, De-Wei Wang, Zhuo Fan, Li Xue, Si-Liu Xu
Summary: The researchers theoretically investigated the localization of nonlinear matter waves in the PT-symmetric Rydberg atomic BECs system, finding that they can be generated and maintained with stability. Fundamental, higher-order, and vortical solitons were discovered, and their stability was evaluated through numerical simulation and linear-stability analysis. Additionally, the collision of solitons showed a quasi-elastic feature.
RESULTS IN PHYSICS
(2023)