Head-on collision of multistate ultralight BEC dark matter configurations

Guzmán, F. S.; Avilez, Ana A.

doi:10.1103/physrevd.97.116003

Cited by 26 publications

(18 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another important feature of the equilibrium configurations shown in section 3.3 is that the only stable one is the ground state, node-less, solution, which is also the attractor solution a general configuration settles down onto, a property that was comprehensively studied in Guzmán and Ureña-López (2004) and Guzmán and Avilez-Lopez (2018). That any arbitrary, initial, field configuration ψ evolves toward the ground state is a consequence of the appropriateness of the SP system to provide an eigenvalue solution by dynamical means.…”

Section: Shortcomings Of the Fluid Approximationmentioning

confidence: 99%

Brief Review on Scalar Field Dark Matter Models

Ureña–López

2019

Front. Astron. Space Sci.

View full text Add to dashboard Cite

The existence of dark matter in the universe has been solidly established in the last decades, after the arrival of accurate cosmological and astrophysical observations, and some consider it the most challenging problem in modern physics. Given the magnitude of the problem, one cannot discard the existence of new particles with properties that may look exotic in comparison with our current understanding of ordinary matter. This is the case for the so-called scalar field dark matter model, which assumes the existence of a (probably fundamental) scalar field with a very tiny mass that can have observable consequences in the formation of cosmological structure. We present here a brief account of the main properties of an ultra-light scalar field (with masses of the order of 10 −22 eV/c 2) and how different observations have been used in the last two decades to put constraints on its physical parameters. Among other topics, we review the cosmological solutions of the model, discuss the features of its self-gravitating equilibrium configurations, revisit the gravitational collapse for the formation of galaxies, and revise the possibility to find a soliton structure in the center of dark matter halos.

show abstract

Section: Shortcomings Of the Fluid Approximationmentioning

confidence: 99%

Brief Review on Scalar Field Dark Matter Models

Ureña–López

2019

Front. Astron. Space Sci.

View full text Add to dashboard Cite

show abstract

“…In practice, this is not as exact. In previous analysis involving single‐state configurations, for example, ground‐state configurations (Guzmán & Ureña López 2004; Guzman & Urena‐Lopez 2006) show a clear stationarity even when evolved in a 3D cartesian domain with low resolution (Guzmán & Avilez 2018), and mixed‐state spherical configurations can be seen to be stationary with spherical codes (Ureña López & Bernal 2010) and show bigger oscillations when resolution is low, for instance, in full 3D (Guzmán & Avilez 2018). This is the first criterion to be fulfilled, because if densities change shape or disperse away, the configuration is clearly non‐stationary.…”

Section: Stabilitymentioning

confidence: 98%

Stability of multistate configurations of fuzzy dark matter

Guzmán

2021

Astron Nachr

View full text Add to dashboard Cite

We study the stability properties of multistate configurations of the Schrödinger-Poisson system without self-interaction, with monopolar and first dipolar components (1,0,0) + (2,1,0). We show that these studied configurations are stable using numerical simulations and using criteria of stationarity, unitarity, and time dependence consistency. The study covers a range of states with a monopolar to dipolar mass ratio of between 47 and 0.17. The astrophysical implication of this result is that this type of configurations is at least stable and can be considered physically sound in multistate ultralight bosonic dark matter.

show abstract

“…To see whether the multistates give a better fit of the rotation curves, we also made the adjustment considering the dark matter halo in the ground state Ψ 100 , which is commonly used to describe the core in SFDM galaxies and it is also typically used to model dwarf-sized galaxies. To do that, we use the Gaussian ansatz (Chavanis 2011;Guzmán and Ávilez 2018;Padilla et al 2020a):…”

Section: Dwarf Disc Galaxiesmentioning

confidence: 99%

Rotation curves with the multistate Scalar Field Dark Matter model

Solís-López¹,

Padilla²,

Matos³

2021

Preprint

View full text Add to dashboard Cite

We use the concept of co-added rotation curves of Salucci et al. to investigate the properties of axi-symmetric multistate Scalar Field Dark Matter halos in low surface brightness galaxies and dwarf disc galaxies. We fit their rotation curves in two-state configurations and we find that all of these can be well fitted with a particle mass µ ∼ (10 −23 −10 −24 )eV/c 2 . Comparing our results with the standard cosmological model, the well-known Λ-cold dark matter, by using the Bayesian information criterion and the Akaike information criterion, we found that our two-state model seemed to be preferred.

show abstract

Head-on collision of multistate ultralight BEC dark matter configurations

Cited by 26 publications

References 47 publications

Brief Review on Scalar Field Dark Matter Models

Brief Review on Scalar Field Dark Matter Models

Stability of multistate configurations of fuzzy dark matter

Rotation curves with the multistate Scalar Field Dark Matter model

Contact Info

Product

Resources

About