Paradigms and Scenarios for the Dark Matter Phenomenon

Salucci, Paolo; Turini, N.; Paolo, Chiara Di

doi:10.3390/universe6080118

Cited by 32 publications

(29 citation statements)

References 32 publications

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“…Additionally, the boson mass constrained with the analysis of the Lyman-α forest data ( > 7 × 10 − 21 eV) [352] is almost two order of magnitudes larger than the one required to account for the kinematic of stars in dwarf galaxies (∼10 −22 eV). Noticeably, for this particle, high redshift rotation curves will provide us with a decisive test, since in this scenario the DM halos are born with the central density core that we observe today, differently from other scenarios in which the DM cores develop with time from originally cuspy distributions [319]. At the same time, SKA and Pulsar Timing Array experiments may play an extremely important role providing us with the smoking gun for FDM by measuring the Compton and de-Broglie scale modulation of Pulsar Timing [353].…”

Section: The Rotation Curves Profiles and The Nature Of Dark Mattermentioning

confidence: 90%

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Einstein, Planck and Vera Rubin: Relevant Encounters Between the Cosmological and the Quantum Worlds

et al. 2021

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In Cosmology and in Fundamental Physics there is a crucial question like: where the elusive substance that we call Dark Matter is hidden in the Universe and what is it made of? that, even after 40 years from the Vera Rubin seminal discovery [1] does not have a proper answer. Actually, the more we have investigated, the more this issue has become strongly entangled with aspects that go beyond the established Quantum Physics, the Standard Model of Elementary particles and the General Relativity and related to processes like the Inflation, the accelerated expansion of the Universe and High Energy Phenomena around compact objects. Even Quantum Gravity and very exotic Dark Matter particle candidates may play a role in framing the Dark Matter mystery that seems to be accomplice of new unknown Physics. Observations and experiments have clearly indicated that the above phenomenon cannot be considered as already theoretically framed, as hoped for decades. The Special Topic to which this review belongs wants to penetrate this newly realized mystery from different angles, including that of a contamination of different fields of Physics apparently unrelated. We show with the works of this ST that this contamination is able to guide us into the required new Physics. This review wants to provide a good number of these “paths or contamination” beyond/among the three worlds above; in most of the cases, the results presented here open a direct link with the multi-scale dark matter phenomenon, enlightening some of its important aspects. Also in the remaining cases, possible interesting contacts emerges. Finally, a very complete and accurate bibliography is provided to help the reader in navigating all these issues.

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Section: The Rotation Curves Profiles and The Nature Of Dark Mattermentioning

confidence: 90%

“…An application of this paradigm leads one to propose the existence of a direct interaction between Dark and Standard Model particles which has finely shaped the inner regions of galaxies [319]. Furthermore, other "exotic" DM candidates, including among many others eg the Mirror Dark Matter (e.g., ref.…”

Section: The Nature Of Dark Mattermentioning

confidence: 99%

Einstein, Planck and Vera Rubin: Relevant Encounters Between the Cosmological and the Quantum Worlds

et al. 2021

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“…See [43] for a more detailed review. Furthermore, the entanglement is also present in the relationships: [28,160], and references therein) holding for the dark world of all galaxies.…”

Section: A Direct Interaction Between Luminous and Dark Matter From The Structural Properties Of The Lsbs?mentioning

confidence: 99%

“…However, we maintain here the scenario of particle dark matter, in that, in addition to successfully accounting for the very existence of virialized objects as galaxies, is able to cope with their formation process and with the large scale properties of the entire Universe, all goals that seem unreachable for alternative scenarios (as MOND [26], F(R)gravity and scalar-tensor gravity [27]). Finally, we think that the dark particle scenario is not obliged to follow the paradigm according to which the particle must be the simplest, the most elegant, the most theoretically favoured and the most expected beyond SM (see [28]).…”

Section: Introductionmentioning

confidence: 99%

Fundamental Properties of the Dark and the Luminous Matter from the Low Surface Brightness Discs

Salucci

Paolo

2021

Universe

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Dark matter (DM) is one of the biggest mystery in the Universe. In this review, we start reporting the evidences for this elusive component and discussing about the proposed particle candidates and scenarios for such phenomenon. Then, we focus on recent results obtained for rotating disc galaxies, in particular for low surface brightness (LSB) galaxies. The main observational properties related to the baryonic matter in LSBs, investigated over the last decades, are briefly recalled. Next, these galaxies are analyzed by means of the mass modelling of their rotation curves both individual and stacked. The latter analysis, via the universal rotation curve (URC) method, results really powerful in giving a global or universal description of the properties of these objects. We report the presence in LSBs of scaling relations among their structural properties that result comparable with those found in galaxies of different morphologies. All this confirms, in disc systems, the existence of a strong entanglement between the luminous matter (LM) and the dark matter (DM). Moreover, we report how in LSBs the tight relationship between their radial gravitational accelerations g and their baryonic components gb results to depend also on the stellar disk length scale and the radius at which the two accelerations have been measured. LSB galaxies strongly challenge the ΛCDM scenario with the relative collisionless dark particle and, alongside with the non-detection of the latter, contribute to guide us towards a new scenario for the DM phenomenon.

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“…The simplest answer to explain the late time acceleration is to resort again to the old cosmological constant , which was introduced by Einstein to build the first general relativistic cosmological model [6]. Based on this ansatz, and strongly supported by the excellent fits a cosmological constant provide to the observations, the standard model of cosmology, called the CDM paradigm, was established, which also requires the existence of another intriguing (and yet undetected) constituent of the Universe, called dark matter [7]. The CDM model describes well observations [8][9][10][11], however, it is confronted with a major problem: no fundamental physical theory can give a reason for it.…”

Section: Introductionmentioning

confidence: 99%

Generalizing the coupling between geometry and matter: $$f\left( R,L_m,T\right) $$ gravity

Haghani

Harkó

2021

Eur. Phys. J. C

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We generalize and unify the $$f\left( R,T\right) $$ f R , T and $$f\left( R,L_m\right) $$ f R , L m type gravity models by assuming that the gravitational Lagrangian is given by an arbitrary function of the Ricci scalar R, of the trace of the energy–momentum tensor T, and of the matter Lagrangian $$L_m$$ L m , so that $$ L_{grav}=f\left( R,L_m,T\right) $$ L grav = f R , L m , T . We obtain the gravitational field equations in the metric formalism, the equations of motion for test particles, and the energy and momentum balance equations, which follow from the covariant divergence of the energy–momentum tensor. Generally, the motion is non-geodesic, and takes place in the presence of an extra force orthogonal to the four-velocity. The Newtonian limit of the equations of motion is also investigated, and the expression of the extra acceleration is obtained for small velocities and weak gravitational fields. The generalized Poisson equation is also obtained in the Newtonian limit, and the Dolgov–Kawasaki instability is also investigated. The cosmological implications of the theory are investigated for a homogeneous, isotropic and flat Universe for two particular choices of the Lagrangian density $$f\left( R,L_m,T\right) $$ f R , L m , T of the gravitational field, with a multiplicative and additive algebraic structure in the matter couplings, respectively, and for two choices of the matter Lagrangian, by using both analytical and numerical methods.

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Paradigms and Scenarios for the Dark Matter Phenomenon

Cited by 32 publications

References 32 publications

Einstein, Planck and Vera Rubin: Relevant Encounters Between the Cosmological and the Quantum Worlds

Einstein, Planck and Vera Rubin: Relevant Encounters Between the Cosmological and the Quantum Worlds

Fundamental Properties of the Dark and the Luminous Matter from the Low Surface Brightness Discs

Generalizing the coupling between geometry and matter: $$f\left( R,L_m,T\right) $$ gravity

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