Zobrazeno 1 - 10
of 228
pro vyhledávání: '"Bisset, R"'
Publikováno v:
Phys. Rev. Lett. 133, 103401 (2024)
We predict a rich excitation spectrum of a binary dipolar supersolid in a linear crystal geometry, where the ground state consists of two partially immiscible components with alternating, interlocking domains. We identify three Goldstone branches, ea
Externí odkaz:
http://arxiv.org/abs/2312.03390
Publikováno v:
SciPost Phys. Core 6, 084 (2023)
We present a theoretical study of a mixture of antidipolar and nondipolar Bose-Einstein condensates confined to an infinite tube. We predict the presence of a spin roton and its associated instability, which triggers a continuous unmodulated--to--sup
Externí odkaz:
http://arxiv.org/abs/2301.08007
Publikováno v:
Phys. Rev. A 107, L021302 (2023)
Breakthrough experiments have newly explored the fascinating physics of dipolar quantum droplets and supersolids. The recent realization of dipolar mixtures opens further intriguing possibilities. We show that under rather general conditions, the pre
Externí odkaz:
http://arxiv.org/abs/2202.08259
Publikováno v:
Phys. Rev. A 103, 063301 (2021)
Combining two Bose-Einstein condensates (BECs) may result in a miscible or immiscible mixture, or even a violent implosion. We theoretically demonstrate that dipolar two-component BECs produce far richer physics than their nondipolar counterparts. In
Externí odkaz:
http://arxiv.org/abs/2103.03425
Publikováno v:
Phys. Rev. Lett. 126, 025301 (2021)
Recently achieved two-component dipolar Bose-Einstein condensates open exciting possibilities for the study of mixtures of ultra-dilute quantum liquids. While non-dipolar self-bound mixtures are necessarily miscible with an approximately fixed ratio
Externí odkaz:
http://arxiv.org/abs/2007.00404
Publikováno v:
Phys. Rev. A 100, 013620 (2019)
Important information for the roton-maxon spectrum of a flattened dipolar Bose-Einstein condensate is extracted by applying a static perturbation exhibiting a periodic in-plane modulation. By solving the Gross-Pitaevskii equation in the presence of t
Externí odkaz:
http://arxiv.org/abs/1901.04875
Publikováno v:
Phys. Rev. A 98, 063620 (2018)
We characterise the properties of a vortex line in an elongated dipolar Bose-Einstein condensate. Increasing the strength of the dipole-dipole interactions (DDIs) relative to the short ranged contact interactions we find that the system crosses over
Externí odkaz:
http://arxiv.org/abs/1810.08347
Publikováno v:
Phys. Rev. A 97, 023602 (2018)
For quantum fluids, the role of quantum fluctuations may be significant in several regimes such as when the dimensionality is low, the density is high, the interactions are strong, or for low particle numbers. In this paper we propose a fundamentally
Externí odkaz:
http://arxiv.org/abs/1711.06478
Autor:
Bisset, R. N., Serafini, S., Iseni, E., Barbiero, M., Bienaimé, T., Lamporesi, G., Ferrari, G., Dalfovo, F.
Publikováno v:
Phys. Rev. A 96, 053605 (2017)
Boundaries strongly affect the behavior of quantized vortices in Bose-Einstein condensates, a phenomenon particularly evident in elongated cigar-shaped traps where vortices tend to orient along a short direction to minimize energy. Remarkably, contri
Externí odkaz:
http://arxiv.org/abs/1705.09102
Autor:
Wang, Wenlong, Bisset, R. N., Ticknor, C., Carretero-Gonzalez, R., Frantzeskakis, D. J., Collins, L. A., Kevrekidis, P. G.
Publikováno v:
Phys. Rev. A 95, 043638 (2017)
In the present work, we explore the existence, stability and dynamics of single and multiple vortex ring states that can arise in Bose-Einstein condensates. Earlier works have illustrated the bifurcation of such states, in the vicinity of the linear
Externí odkaz:
http://arxiv.org/abs/1702.03663