Stable vortex in Bose-Einstein condensate dark matter

O., Nikolaieva, Y.; Olashyn, A.; Kuriatnikov, Yevhenii; Vilchynskii, S.I.; Yakimenko, A. I.

doi:10.1063/10.0005557

Cited by 16 publications

(3 citation statements)

References 33 publications

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“…In this case, the BEC wave function in Eq. ( 16) depends only on radial distance r in spherical coordinates (21) and the density function (see Eq. ( 19)) equals…”

Section: Non-rotating Spherically-symmetric Corementioning

confidence: 99%

“…The central object of our study, the vortex, has a vanishing wavefunction at the vortex line, with a quantized circular flow around the vortex line [1]. According to the recent numerical studies [21,22] only the non-rotating soliton and single-charged vortex are stable, even being strongly perturbed. In the present work, we consider a DM halo, which consists of two regions -core and isothermal envelope, while the core could be either a soliton or a single-charged vortex.…”

Section: Introductionmentioning

confidence: 97%

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Dynamical galactic effects induced by stable vortex structure in bosonic dark matter

Korshynska¹,

Bidasyuk²,

V.³

et al. 2023

Preprint

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The nature of dark matter (DM) remains one of the unsolved mysteries of modern physics. An intriguing possibility is to assume that DM consists of ultralight bosonic particles in the Bose-Einstein condensate (BEC) state. We study stationary DM structures by using the system of the Gross-Pitaevskii and Poisson equations, including the effective temperature effect with parameters chosen to describe the Milky Way galaxy. We have investigated DM structure with BEC core and isothermal envelope. We compare the spherically symmetric and vortex core states, which allows us to analyze the impact of the core vorticity on the halo density, velocity distribution, and, therefore, its gravitational field. Gravitational field calculation is done in the gravitoelectromagnetism approach to include the impact of the core rotation, which induces a gravimagnetic field. As result, the halo with a vortex core is characterized by smaller orbital velocity in the galactic disk region in comparison with the non-rotating halo. It is found that the core vorticity produces gravimagnetic perturbation of celestial body dynamics, which can modify the circular trajectories.

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“…In this case, the BEC wave function in Eq. ( 16) depends only on radial distance r in spherical coordinates (21) and the density function (see Eq. ( 19)) equals…”

Section: Non-rotating Spherically-symmetric Corementioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Dynamical galactic effects induced by stable vortex structure in bosonic dark matter

Korshynska¹,

Bidasyuk²,

V.³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The time-dependent Gross-Pitaevskii equation appears in a broad range of physical systems, beyond condensed matter physics. For example, in combination with a gravitational trapping potential it can model Dark Matter as a Bose-Einstein condensate [25,26]. Using the Madelung transformation, the equation can be sent into a system of equations that describe a barotropic-type fluid, which can model codimension two membranes in higher dimensions [27].…”

Section: Introductionmentioning

confidence: 99%

Poincaré index formula and analogy with the Kosterlitz-Thouless transition in a non-rotated cold atom Bose-Einstein condensate

Garaud

Niemi

2022

J. High Energ. Phys.

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A dilute gas of Bose-Einstein condensed atoms in a non-rotated and axially symmetric harmonic trap is modelled by the time dependent Gross-Pitaevskii equation. When the angular momentum carried by the condensate does not vanish, the minimum energy state describes vortices (or antivortices) that propagate around the trap center. The number of (anti)vortices increases with the angular momentum, and they repel each other to form Abrikosov lattices. Besides vortices and antivortices there are also stagnation points where the superflow vanishes; to our knowledge the stagnation points have not been analyzed previously, in the context of the Gross-Pitaevskii equation. The Poincaré index formula states that the difference in the number of vortices and stagnation points can never change. When the number of stagnation points is small, they tend to aggregate into degenerate propagating structures. But when the number becomes sufficiently large, the stagnation points tend to pair up with the vortex cores, to propagate around the trap center in regular lattice arrangements. There is an analogy with the geometry of the Kosterlitz-Thouless transition, with the angular momentum of the condensate as the external control parameter instead of the temperature.

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Dynamics of Vector Bright Solitons in Spin-Tensor-Momentum-Coupled Bose–Einstein Condensates with Tunable Raman Coupling

Wang,

Guo,

Yang

et al. 2024

J Low Temp Phys

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Stable vortex in Bose-Einstein condensate dark matter

Cited by 16 publications

References 33 publications

Dynamical galactic effects induced by stable vortex structure in bosonic dark matter

Dynamical galactic effects induced by stable vortex structure in bosonic dark matter

Poincaré index formula and analogy with the Kosterlitz-Thouless transition in a non-rotated cold atom Bose-Einstein condensate

Dynamics of Vector Bright Solitons in Spin-Tensor-Momentum-Coupled Bose–Einstein Condensates with Tunable Raman Coupling

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