Stable vortex in Bose-Einstein condensate dark matter

被引：14

作者：

Nikolaieva, Y. O. ^{[1
]}

Olashyn, A. O. ^{[1
,2
]}

Kuriatnikov, Y. I. ^{[1
,3
]}

Vilchynskii, S. I. ^{[1
,4
]}

Yakimenko, A. I. ^{[1
]}

机构：

[1] Taras Shevchenko Natl Univ Kyiv, Dept Phys, UA-01601 Kiev, Ukraine

[2] Leiden Univ, Inst Lorentz, NL-2300 RA Leiden, Netherlands

[3] TU Wien, Atominst, A-1020 Vienna, Austria

[4] Ecole Polytech Federale Lausanne EPFL, Inst Phys, Lab Particle Phys & Cosmol LPPC, CH-1015 Lausanne, Switzerland

来源：

LOW TEMPERATURE PHYSICS | 2021年 / 47卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

ultra-light dark matter; Bose-Einstein condensate; galactic halo; vortex soliton; CANDIDATES;

D O I：

10.1063/10.0005557

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The nature of dark matter (DM) is one of the most fascinating unresolved challenges of modern physics. One of the perspective hypotheses suggests that DM consists of ultralight bosonic particles in the state of Bose-Einstein condensate (BEC). The superfluid nature of BEC must dramatically affect the properties of DM including quantization of the angular momentum. Angular momentum quantum in the form of a vortex line is expected to produce a considerable impact on the luminous matter in galaxies including density distribution and rotation curves. We investigate the evolution of spinning DM cloud with typical galactic halo mass and radius. Analytically and numerically stationary vortex soliton states with different topological charges have been analyzed. It has been shown that while all multi-charged vortex states are unstable, a single-charged vortex soliton is extremely robust and survives during the lifetime of the Universe.

引用

页码：684 / 692

页数：9

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