Results 1 to 10 of about 135,634 (231)

From Modified Newtonian Dynamics to Superfluid Vacuum Theory. [PDF]

open access: yesEntropy (Basel), 2022
Herein is a review of the essentials of Modified Newtonian Dynamics (MOND) versus dark matter models based on Superfluids for modeling galactic rotation curves. We review the successes and issues of both approaches.
Scott TC.
europepmc   +2 more sources

Phase Transition in Modified Newtonian Dynamics (MONDian) Self-Gravitating Systems. [PDF]

open access: yesEntropy (Basel), 2021
We study the statistical mechanics of binary systems under the gravitational interaction of the Modified Newtonian Dynamics (MOND) in three-dimensional space.
Zhoolideh Haghighi MH   +2 more
europepmc   +2 more sources

Gravitational lensing in modified Newtonian dynamics [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2001
AbstractGravitational lensing is most often used as a tool to investigate the distribution of (dark) matter in the universe, but, if the mass distribution is known a priori, it becomes, at least in principle, a powerful probe of gravity itself. Lensing observations are a more powerful tool than dynamical measurements because they allow measurements of ...
Mortlock, DJ, Turner, EL
core   +18 more sources

Modified Newtonian dynamics of large-scale structure [PDF]

open access: bronze, 2002
We examine the implications of Modified Newtonian Dynamics (MOND) on the large scale structure in a Friedmann-Robertson-Walker universe. We employ a ``Jeans swindle'' to write a MOND-type relationship between the fluctuations in the density and the ...
Adi Nusser
openalex   +4 more sources

Einstein was Wrong: Newtonian Dynamics Can Disagree Completely with Relativistic Dynamics at Low Speed

open access: green, 2003
According to Einstein, the trajectory of a particle that is predicted by special relativistic mechanics is well approximated by the trajectory predicted by Newtonian mechanics if the particle speed is low, i.e., much less than the speed of light. However,
Boon Leong Lan
openalex   +3 more sources

Oscillating Cosmological Force Modifies Newtonian Dynamics [PDF]

open access: yesGalaxies, 2020
In the Newtonian limit of general relativity a force acting on a test mass in a central gravitational field is conventionally defined by the attractive Newtonian gravity (inverse square) term plus a small repulsive cosmological force, which is proportional to the slow acceleration of the universe expansion.
Igor I. Smolyaninov
openaire   +5 more sources

Hamiltonian formulation of general relativity and post-Newtonian dynamics of compact binaries. [PDF]

open access: yesLiving Rev Relativ, 2018
Hamiltonian formalisms provide powerful tools for the computation of approximate analytic solutions of the Einstein field equations. The post-Newtonian computations of the explicit analytic dynamics and motion of compact binaries are discussed within the
Schäfer G, Jaranowski P.
europepmc   +2 more sources

Khronometric Theories of Modified Newtonian Dynamics

open access: yesThe Astrophysical Journal, 2023
Abstract In 2011 Blanchet and Marsat suggested a fully relativistic version of Milgrom's modified Newtonian dynamics in which the dynamical degrees of freedom consist of the spacetime metric and a foliation of spacetime, the khronon field. This theory is simpler than the alternative relativistic formulations.
Éanna. É. Flanagan
openaire   +3 more sources

Dissipationless Collapses in Modified Newtonian Dynamics [PDF]

open access: bronzeThe Astrophysical Journal, 2007
Dissipationless collapses in modified Newtonian dynamics (MOND) are studied by using a new particle-mesh N-body code based on our numerical MOND potential solver. We found that low surface density end products have shallower inner density profiles, flatter radial velocity dispersion profiles, and more radially anisotropic orbital distributions than ...
Carlo Nipoti, P. Londrillo, Luca Ciotti
openalex   +3 more sources

Nonlinear optical simulation of the post-Newton Schrödinger equation. [PDF]

open access: yesNat Commun
One of the grand open problems of modern physics is the unification of Einstein’s general relativity and quantum mechanics. This challenge has been approached by the greatest physicists but there is still no complete theory and experimental evidence ...
Paz O   +3 more
europepmc   +2 more sources

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