The nature of dark matter

Кириллов, А. А.

doi:10.1016/j.physletb.2005.11.005

Cited by 31 publications

(93 citation statements)

References 40 publications

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“…Logarithmic corrections to the Newtonian gravitational potential have been recently used to phenomenologically tackle the problem of dark matter in galaxies [18][19][20][21][22][23]. For example, Fabris and Campos [22] used…”

Section: The Perihelion Precession Due To a 1/r Forcementioning

confidence: 99%

“…If and when we have, say, two independent determinations of the anomalous perihelion rate of a given planet x = x best ± δx and y = y best ± δ y, we will see if they are compatible with each other and take their difference |x best − y best | as representative of the real uncertainty affecting the apsidal extra precession of that planet. Moreover, it would be interesting to see if for different sets of estimated corrections to the perihelion rates the figures for Π in Tables 3 and 4 change by an extent sufficient to alter the conclusions of (13) and (21).…”

Section: Comments and Conclusionmentioning

confidence: 99%

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Solar System Tests of Some Models of Modified Gravity Proposed to Explain Galactic Rotation Curves without Dark Matter

Iorio

Ruggiero

2008

Scholarly Research Exchange

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We consider the recently estimated corrections Δω to the standard Newtonian/Einsteinian secular precessions of the longitudes of perihelia ω of several planets of the Solar System in order to evaluate whether they are compatible with the predicted anomalous precessions due to models of long-range modified gravity put forth to account for certain features of the rotation curves of galaxies without resorting to dark matter. In particular, we consider a logarithmic-type correction and a f (R) inspired powerlaw modification of the Newtonian gravitational potential. The results obtained by taking the ratio of the predicted apsidal rates for different pairs of planets show that the modifications of the Newtonian potentials examined in this paper are not compatible with the secular extra-precessions of the perihelia of the Solar System's planets estimated by E. V. Pitjeva as solve-for parameters processing almost one century of data with the latest EPM ephemerides.

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Section: The Perihelion Precession Due To a 1/r Forcementioning

confidence: 99%

Section: Comments and Conclusionmentioning

confidence: 99%

Solar System Tests of Some Models of Modified Gravity Proposed to Explain Galactic Rotation Curves without Dark Matter

Iorio

Ruggiero

2008

Scholarly Research Exchange

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“…Indeed, a nonrelativistic matter contribution is observed in the actual Universe and it corresponds to the dark matter component. Since our fluid is non relativistic in the very early stages of the Universe evolution, we are lead to regard it as a good candidate for the so-called cold dark matter [15,16,17,18] (for a discussion on the correlation exiting between the observed dark matter and the baryonic one see [19] and for a theoretical interpretation of this feature see [20]). In this respect we below investigate the cosmological issue of a Schrödinger approach to Quantum Cosmology.…”

Section: A Evolutionary Quantum Gravitymentioning

confidence: 99%

Evolutionary quantum dynamics of a generic universe

Battisti

Montani

2006

Physics Letters B

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The implications of an Evolutionary Quantum Gravity are addressed in view of formulating a new dark matter candidate. We consider a Schrödinger dynamics for the gravitational field associated to a generic cosmological model and then we solve the corresponding eigenvalues problem, inferring its phenomenological issue for the actual Universe. The spectrum of the super-Hamiltonian is determined including a free inflaton field, the ultrarelativistic thermal bath and a perfect gas into the dynamics. We show that, when a Planckian cut-off is imposed in the theory and the classical limit of the ground state is taken, then a dark matter contribution can not arise because its critical parameter Ω dm is negligible today when the appropriate cosmological implementation of the model is provided. Thus, we show that, from a phenomenological point of view, an Evolutionary Quantum Cosmology overlaps the Wheeler-DeWitt approach and therefore it can be inferred as appropriate to describe early stages of the Universe without significant traces on the later evolution. Finally, we provide indications that the horizon paradox can be solved in the Planck era by the morphology of the Universe wave function.

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“…1 We note that the lighted side of a throat S ± is turned by the matrix U ±1 with respect to the dark side, so that in general the union S R ∪ S A = S.…”

Section: The Topological Bias Of Sourcesmentioning

confidence: 99%

“…[1]). The simplest model of such a space is given by a static gas of wormholes which was shown to give rise to the scale dependent renormalization of intensities of pure gravitational sources, i.e., to the origin of "dark matter halo" around any point-like gravitating mas [2].…”

Section: Introductionmentioning

confidence: 99%

On the topological bias of discrete sources in the gas of wormholes

2010

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The model of space in the form of a static gas of wormholes is considered. It is shown that the scattering on such a gas gives rise to the formation of a specific diffuse halo around every discrete source. Properties of the halo are determined by the distribution of wormholes in space and the halo has to be correlated with the distribution of dark matter. This allows to explain the absence of dark matter in intergalactic gas clouds. Numerical estimates for parameters of the gas of wormholes are also obtained.

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The nature of dark matter

Cited by 31 publications

References 40 publications

Solar System Tests of Some Models of Modified Gravity Proposed to Explain Galactic Rotation Curves without Dark Matter

Solar System Tests of Some Models of Modified Gravity Proposed to Explain Galactic Rotation Curves without Dark Matter

Evolutionary quantum dynamics of a generic universe

On the topological bias of discrete sources in the gas of wormholes

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