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A modified Newton's gravity is obtained as the weak field approximation of the Einstein's equation in Finsler space. It is found that a specified Finsler structure makes the modified Newton's gravity equivalent to the modified Newtonian…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Zhe Chang , Xin Li

Recent experimental results for the gravitational constant G from Cavendish-type experiments were analysed in the framework of Modified Newtonian Dynamics (MOND). MOND corrections were applied to the equation of motion of a pendulum, under…

广义相对论与量子宇宙学 · 物理学 2020-01-20 Norbert Klein

In a recent series of papers, the authors introduced a new Relativistic Newtonian Dynamics (RND) and tested its validity by the accurate prediction of the gravitational time dilation, the anomalous precession of Mercury, the periastron…

综合物理 · 物理学 2017-05-24 Y. Friedman , J. M. Steiner

The rotation curves of low surface brightness galaxies provide a unique data set with which to test alternative theories of gravitation over a large dynamic range in size, mass, surface density, and acceleration. Many clearly fail,…

天体物理学 · 物理学 2015-06-24 Stacy McGaugh , Erwin de Blok

The missing mass problem has not been solved decisively yet. Observations show that if gravity is to be modified, then the MOND theory is its excellent approximation on galactic scales. MOND suggests an adjustments of the laws of physics in…

星系天体物理 · 物理学 2019-08-22 Michal Bílek , Ingo Thies , Pavel Kroupa , Benoit Famaey

We consider a classical condensed matter theory in a Newtonian framework where conservation laws \partial_t \rho + \partial_i (\rho v^i) = 0 \partial_t (\rho v^j) + \partial_i(\rho v^i v^j + p^{ij}) = 0 are related with the Lagrange…

广义相对论与量子宇宙学 · 物理学 2007-05-23 I. Schmelzer

We consider the possibility of generalizing the Newtonian law of gravity and the transition to a general relativistic model for weak fields with the inclusion of a repulsive term identified as a cosmological constant. The analysis includes…

广义相对论与量子宇宙学 · 物理学 2020-12-10 N. N. Fimin , V. M. Chechetkin

Many past attempts to kill MOND have only strengthened the theory. Better data on galaxy velocity curves clearly favor MOND (without fine-tuning) over cold dark matter. The usual critism on the incompleteness of classical MOND has spurred a…

天体物理学 · 物理学 2007-05-23 HongSheng Zhao

I analyze the possibility of reproducing MONDian Dark Matter effects by using a non-local model of gravity. The model was used before in order to recreate screening effects for the Cosmological Constant ($\Lambda$) value. Although the model…

广义相对论与量子宇宙学 · 物理学 2013-11-26 Ivan Arraut

The extremely small accelerations of objects required for the the onset of modified Newtonian dynamics, or MOND, makes testing the hypothesis in conventional terrestrial laboratories virtually impossible. This is due to the large background…

广义相对论与量子宇宙学 · 物理学 2015-06-16 Saurya Das , S. N. Patitsas

Superfluid dark matter (SFDM) is a model that promises to reproduce the successes of both particle dark matter on cosmological scales and those of Modified Newtonian Dynamics (MOND) on galactic scales. SFDM reproduces MOND only up to a…

星系天体物理 · 物理学 2023-09-07 Tobias Mistele , Stacy McGaugh , Sabine Hossenfelder

We propose a class of actions for the spacetime metric that introduce corrections to the Einstein-Hilbert Lagrangian depending on the logarithm of some curvature scalars. We show that for some choices of these invariants the models are…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Ignacio Navarro , Karel Van Acoleyen

The Modified Newtonian Dynamics (MOND) generically predicts a violation of the strong version of the equivalence principle. As a result the gravitational dynamics of a system depends on the external gravitational field in which the system…

宇宙学与河外天体物理 · 物理学 2011-06-01 Luc Blanchet , Jerome Novak

We review and extend the Gauge Vectors-Tensor gravity: a covariant theory of gravity composed of a metric and gauge fields, leading to simple second order partial differential equations of motion, whose Newtonian and strong limits coincide…

广义相对论与量子宇宙学 · 物理学 2014-06-03 Qasem Exirifard

We elaborate on our proposal regarding a connection between global physics and local galactic dynamics via quantum gravity. This proposal calls for the concept of MONDian dark matter which behaves like cold dark matter at cluster and…

高能物理 - 理论 · 物理学 2015-06-03 Chiu Man Ho , Djordje Minic , Y. Jack Ng

The stability of spiral galaxies is compared in modified Newtonian Dynamics (MOND) and Newtonian dynamics with dark matter (DM). We extend our previous simulations that involved pure stellar discs without gas, to deal with the effects of…

天体物理学 · 物理学 2009-11-13 O. Tiret , F. Combes

We show that the existence of the Newtonian limit cannot work as a selection rule for choosing the correct gravity theory fromm the set of all L=f(R) ones. To this end we prove that stability of the ground state solution in arbitrary purely…

广义相对论与量子宇宙学 · 物理学 2008-12-19 Leszek M. Sokolowski

Models of "modified-inertia" formulation of MOND are described and applied to nonrelativistic many-body systems. They involve time-nonlocal equations of motion. Momentum, angular momentum, and energy are (nonlocally) defined, whose total…

星系天体物理 · 物理学 2022-10-03 Mordehai Milgrom

We propose to use multiple-imaged gravitational lenses to set limits on gravity theories without dark matter, specificly TeVeS (Bekenstein 2004), a theory which is consistent with fundamental relativistic principles and the phenomenology of…

天体物理学 · 物理学 2009-11-11 HongSheng Zhao , David J. Bacon , Andy N. Taylor , Keith Horne

A proper test of Modified Newtonian Dynamics (MOND) in systems of non-trivial geometries depends on modelling subtle differences in several versions of its postulated theories. This is especially important for lensing and dynamics of barely…

天体物理学 · 物理学 2008-11-26 Garry W. Angus , Benoit Famaey , HongSheng Zhao