A Review on the Scalar Field/Bose-Einstein Condensate Dark Matter Model

In this paper, we further elaborate on the Bose–Einstein condensate (BEC) dark matter model extended in our previous work [Phys. Rev. D 2020, 102, 083510] by the inclusion of sixth-order (or three-particle) repulsive self-interaction term. Herein, our goal is to complete the picture through adding to the model the fourth-order repulsive self-interaction. The results of our analysis confirm the following: while in the previous work the two-phase structure and the possibility of first-order phase transition was established, here we demonstrate that with the two self-interactions involved, the nontrivial phase structure of the enriched model remains intact. For this to hold, we study the conditions which the parameters of the model, including the interaction parameters, should satisfy. As a by-product and in order to provide some illustration, we obtain the rotation curves and the (bipartite) entanglement entropy for the case of a particular dwarf galaxy.

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Brief History of Ultra-light Scalar Dark Matter Models

EPJ Web of Conferences ◽

10.1051/epjconf/201816806005 ◽

2018 ◽

Vol 168 ◽

pp. 06005 ◽

Cited By ~ 33

Author(s):

Jae-Weon Lee

Keyword(s):

Dark Matter ◽

Scalar Field ◽

Cold Dark Matter ◽

Einstein Condensate ◽

Matter Wave ◽

Small Scale ◽

Matter Model ◽

Light Scalar ◽

History Of ◽

Dark Matter Model

This is a review on the brief history of the scalar field dark matter model also known as fuzzy dark matter, BEC dark matter, wave dark matter, or ultra-light axion. In this model ultra-light scalar dark matter particles with mass m = O(10-22)eV condense in a single Bose-Einstein condensate state and behave collectively like a classical wave. Galactic dark matter halos can be described as a self-gravitating coherent scalar field configuration called boson stars. At the scale larger than galaxies the dark matter acts like cold dark matter, while below the scale quantum pressure from the uncertainty principle suppresses the smaller structure formation so that it can resolve the small scale crisis of the conventional cold dark matter model.

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COMPLEX SCALAR FIELD DARK MATTER ON GALACTIC SCALES

Modern Physics Letters A ◽

10.1142/s021773231430002x ◽

2014 ◽

Vol 29 (02) ◽

pp. 1430002 ◽

Cited By ~ 36

Author(s):

TANJA RINDLER-DALLER ◽

PAUL R. SHAPIRO

Keyword(s):

Dark Matter ◽

Scalar Field ◽

Early Universe ◽

Einstein Condensate ◽

Model Parameters ◽

Galactic Halos ◽

Complex Scalar ◽

Bose Einstein Condensate ◽

Complex Scalar Field ◽

Bose Einstein

The nature of the cosmological dark matter (DM) remains elusive. Recent studies have advocated the possibility that DM could be composed of ultra-light, self-interacting bosons, forming a Bose–Einstein condensate (BEC) in the very early Universe. We consider models which are charged under a global U(1)-symmetry such that the DM number is conserved. It can then be described as a classical complex scalar field which evolves in an expanding Universe. We present a brief review on the bounds on the model parameters from cosmological and galactic observations, along with the properties of galactic halos which result from such a DM candidate.

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Stueckelberg Bosons as ultralight dark matter candidate

Modern Physics Letters A ◽

10.1142/s0217732319503309 ◽

2019 ◽

Vol 34 (40) ◽

pp. 1950330 ◽

Cited By ~ 1

Author(s):

T. R. Govindarajan ◽

Nikhil Kalyanapuram

Keyword(s):

Dark Matter ◽

Scalar Field ◽

Einstein Condensate ◽

Dark Matter Candidate ◽

Bose Einstein Condensate ◽

Bose Einstein ◽

Future Work ◽

Novel Model

In this paper, we propose a novel model of scalar field fuzzy dark matter based on Stueckelberg theory. Dark matter is treated as a Bose–Einstein condensate of Stueckelberg particles and the resulting cosmological effects are analyzed. Fits are understood for the density and halo sizes of such particles and comparison with existing models is made. Certain attractive properties of the model are demonstrated and lines for future work are laid out.

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Multistate scalar field dark matter and its correlation with galactic properties

International Journal of Modern Physics D ◽

10.1142/s0218271818500311 ◽

2018 ◽

Vol 27 (03) ◽

pp. 1850031 ◽

Cited By ~ 4

Author(s):

A. Hernández-Almada ◽

Miguel A. García-Aspeitia

Keyword(s):

Dark Matter ◽

Scalar Field ◽

Neutral Hydrogen ◽

Einstein Condensate ◽

Galactic Rotation ◽

Intrinsic Properties ◽

Future Studies ◽

Bose Einstein Condensate ◽

The Galaxy ◽

Bose Einstein

In this paper, we search for the correlations between the intrinsic properties of galaxies and the Bose–Einstein condensate (BEC) under the scheme of a scalar field dark matter (SFDM) at the temperature of condensation greater than zero. According to this paradigm the BEC is distributed in several states. Based on the galactic rotation curves collected in SPARC dataset, we observe that the SFDM parameters present a weak correlation with the most of the galaxy properties, having only a correlation with those related to neutral hydrogen emissions. In addition, we found evidence to the support of self-interaction between the different BEC states proposing that, in future studies, the crossed terms in SFDM equations must be considered. Finally, we find a null correlation with galaxy distances giving support to the nonhierarchy of SFDM formation.

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