Results 51 to 60 of about 84,384 (149)

End of a Dark Age?

open access: yes, 2016
We argue that dark matter and dark energy phenomena associated with galactic rotation curves, X-ray cluster mass profiles, and type Ia supernova data can be accounted for via small corrections to idealized general relativistic spacetime geometries due to
McDevitt, Timothy   +3 more
core   +1 more source

Fractional Modeling of Non-Newtonian Casson Fluid between Two Parallel Plates

open access: yesJournal of Mathematics, 2023
In this manuscript, fractional modeling of non-Newtonian Casson fluid squeezed between two parallel plates is performed under the influence of magneto-hydro-dynamic and Darcian effects.
Mubashir Qayyum   +2 more
doaj   +1 more source

Generalized Statistics Variational Perturbation Approximation using q-Deformed Calculus

open access: yes, 2010
A principled framework to generalize variational perturbation approximations (VPA's) formulated within the ambit of the nonadditive statistics of Tsallis statistics, is introduced.
A. Plastino   +25 more
core   +1 more source

Novel numerical analysis of multi-term time fractional viscoelastic non-newtonian fluid models for simulating unsteady MHD Couette flow of a generalized Oldroyd-B fluid [PDF]

open access: yesFractional Calculus and Applied Analysis, 2017
In this paper, we consider the application of the finite difference method for a class of novel multi-term time fractional viscoelastic non-Newtonian fluid models. An important contribution of the work is that the new model not only has a multi-term time
Libo Feng   +3 more
semanticscholar   +1 more source

Homotopic fractional analysis of thin film flow of Oldroyd 6-Constant fluid

open access: yesAlexandria Engineering Journal, 2021
The analysis of Oldroyd fluids; a class of Maxwell fluids which also bears Newtonian properties under some conditions, has important implications for different scientific and engineering/industrial applications.
Farnaz   +5 more
doaj   +1 more source

Binding quantum matter and space-time, without romanticism

open access: yes, 2018
Understanding the emergence of a tangible 4-dimensional space-time from a quantum theory of gravity promises to be a tremendously difficult task. This article makes the case that this task may not have to be carried.
Tilloy, Antoine
core   +1 more source

Albert Einstein's 1916 Review Article on General Relativity [PDF]

open access: yes, 2004
The first comprehensive overview of the final version of the general theory of relativity was published by Einstein in 1916 after several expositions of preliminary versions and latest revisions of the theory in November 1915.
Sauer, Tilman
core   +2 more sources

A Variational Formulation of Symplectic Noncommutative Mechanics

open access: yes, 2007
The standard lore in noncommutative physics is the use of first order variational description of a dynamical system to probe the space noncommutativity and its consequences in the dynamics in phase space.
Anderson I.   +5 more
core   +1 more source

Analysis of Fractional Thin Film Flow of Third Grade Fluid in Lifting and Drainage via Homotopy Perturbation Procedure

open access: yesAdvances in Mathematical Physics, 2022
Analysis of thin film flows is an important topic in fluid dynamics due to the large number of industrial applications such as food processing, chip manufacturing, irrigation, oil refining process, painting finishing, etc.
Mubashir Qayyum   +5 more
doaj   +1 more source

The Missing Mass Problem as a Manifestation of GR Contextuality

open access: yes, 2017
In Newtonian gravity, mass is an intrinsic property of matter while in general relativity (GR), mass is a contextual property of matter, i.e., matter can simultaneously possess two different values of mass when it is responsible for two different ...
McDevitt, Timothy   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy