Results 31 to 40 of about 72,022 (266)
Physics Letters B, 2023 A new class of modified gravity theories, made possible by subtle features of the canonical formulation of general covariance, naturally allows MOND-like behavior (MOdified Newtonian Dynamics) in effective space-time solutions without introducing new ...
Martin Bojowald, Erick I. Duque
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Quadratic gravity potentials in de Sitter spacetime from Feynman diagrams
Journal of High Energy Physics, 2023 We employ a manifestly covariant formalism to compute the tree-level amputated Green’s function of non-minimally coupled scalar fields in quadratic gravity in a de Sitter background.
Renata Ferrero, Chris Ripken
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SPHERICAL COLLAPSE IN MODIFIED NEWTONIAN DYNAMICS [PDF]
The Astrophysical Journal, 2009 23 pages, 7 figures, ApJ ...
Malekjani, M., Rahvar, S., Haghi, H.
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GravitoMagnetic force in modified Newtonian dynamics [PDF]
Journal of Cosmology and Astroparticle Physics, 2013 We introduce the Gauge Vector-Tensor (GVT) theory by extending the AQUAL's approach to the GravitoElectroMagnetism (GEM) approximation of gravity. GVT is a generally covariant theory of gravity composed of a pseudo Riemannian metric and two U(1) gauge connections that reproduces MOND in the limit of very weak gravitational fields while remains ...
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Modified Baryonic Dynamics: two-component cosmological simulations with light sterile neutrinos [PDF]
, 2014 In this article we continue to test cosmological models centred on Modified Newtonian Dynamics (MOND) with light sterile neutrinos, which could in principle be a way to solve the fine-tuning problems of the standard model on galaxy scales while ...
Angus, GW +4 more
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The total mass of the early-type galaxy NGC 4649 (M60) [PDF]
Serbian Astronomical Journal, 2008 In this paper the problem of the total mass and the total mass-to-light ratio of the early-type galaxy NGC 4649 (M60) is analyzed. Use is made of two independent techniques: the X-ray methodology which is based on the temperature of the X-ray halo of NGC
Samurović S., Ćirković M.M.
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Modified inertia from extended uncertainty principle(s) and its relation to MoND
European Physical Journal C: Particles and Fields, 2020 In this paper we show that Modified Inertia, i.e., the modification of inertia predicted by some alternative theories of gravity at cosmic scales, can be naturally derived within the framework of the extended uncertainty principle (EUP). Specifically, we
Jaume Giné, Giuseppe Gaetano Luciano
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Cosmology with modified Newtonian dynamics (MOND) [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 It is well-known that the application of Newtonian dynamics to an expanding spherical region leads to the correct relativistic expression (the Friedmann equation) for the evolution of the cosmic scale factor. Here, the cosmological implications of Milgrom's modified Newtonian dynamics (MOND) are considered by means of a similar procedure.
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Modified Newtonian Dynamics: A Falsification of Cold Dark Matter
Advances in Astronomy, 2009 The only viable alternative to dark matter is one in which Newtonian dynamics or gravity breaks down in the limit of low accelerations, as in modified Newtonian dynamics (MONDs).
R. H. Sanders
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Modified gravity revealed along geodesic tracks
European Physical Journal C: Particles and Fields, 2018 The study of the dynamics of a two-body system in modified gravity constitutes a more complex problem than in Newtonian gravity. Numerical methods are typically needed to solve the equations of geodesics.
Mariafelicia De Laurentis +2 more
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