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Short Review of the main achievements of the Scalar Field, Fuzzy, Ultralight, Wave, BEC Dark Matter model
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abstract
The Scalar Field Dark Matter model has been known in various ways throughout its history; Fuzzy, BEC, Wave, Ultralight, Axion-like Dark Matter, etc. All of them consist in proposing that the dark matter of the universe is a spinless field $\Phi$ that follows the Klein-Gordon (KG) equation of motion $\Box\Phi-dV/d\Phi=0$, for a given scalar field potential $V$. The difference between different models is sometimes the choice of the scalar field potential $V$. In the literature we find that people usually work in the nonrelativistic, weak-field limit of the KG equation where it transforms into the Schr\"odinger equation and the Einstein equations into the Poisson equation, reducing the KG-Einstein system, to the Schr\"odinger-Poisson system. In this paper, we review some of the most interesting achievements of this model from the historical point of view and its comparison with observations, showing that this model could be the last answer to the question about the nature of dark matter in the universe.
Forward citations
Cited by 7 Pith papers
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Bounds on PBH fraction in a stimulated axion/ALP decay scenario
Stimulated axion decay around superradiant primordial black holes yields photon fluxes that exceed observed backgrounds, forcing f_PBH < 10^-17 for PBH masses 10^-19 to 10^-7 solar masses.
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Non-minimally coupled scalar field dark sector of the universe: in-depth (Einstein frame) case study
A complete dynamical-systems stability map for five non-minimally coupled scalar-field dark-energy models, including the negative-potential regime that generically drives the universe to H=0.
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Fermionic Dark Matter spikes: origin and growth of Black Hole seeds
Fermionic dark matter halos around supermassive black holes can form non-power-law spikes or even density depletions, depending on the fermion mass and degeneracy, instead of the universal r^-3/2 spike of power-law halos.
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Vortex State of Ultralight Dark Matter and the Fornax Timing Problem
A vortex state of ultralight dark matter suppresses dynamical friction for co-rotating globular clusters, potentially resolving the Fornax timing problem.
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Effect of Cosmic Neutrino Background on the Dark Matter Self-interaction via Neutrino force
The cosmic neutrino background screens the neutrino-pair force between scalar dark matter particles for m_chi below the CnuB temperature, reshaping SIDM parameter space and eliminating Sommerfeld enhancement.
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Shadow constraints of charged black hole with scalar hair and gravitational waves from extreme mass ratio inspirals
EHT shadow data constrain the EMCS black hole charge and scalar hair to about 0.1 and 0.01 levels, while LISA EMRI waveforms could reach 0.01 and 0.0001 levels.
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Probing vector gravitational atoms with eccentric intermediate mass-ratio inspirals
Eccentric intermediate-mass-ratio inspirals around vector gravitational atoms acquire faster decay, stronger circularization, and negative periastron precession, making the cloud visible to LISA-like detectors.
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