Results 21 to 30 of about 18,545 (191)

Ionospheric and boundary contributions to the Dessler-Parker-Sckopke formula for Dst [PDF]

open access: yesAnnales Geophysicae, 2006
The Dessler-Parker-Sckopke formula for the disturbance magnetic field averaged over the Earth's surface, universally used to interpret the geomagnetic Dst index, can be generalized, by using the well known method of deriving it from the virial theorem,
V. M. Vasyliūnas
doaj   +1 more source

Virial Theorem in Nonlocal Newtonian Gravity

open access: yesUniverse, 2016
Nonlocal gravity is the recent classical nonlocal generalization of Einstein’s theory of gravitation in which the past history of the gravitational field is taken into account. In this theory, nonlocality appears to simulate dark matter.
Bahram Mashhoon
doaj   +1 more source

Bootstrap bounds on D0-brane quantum mechanics

open access: yesJournal of High Energy Physics, 2023
We derive simple bootstrap bounds on correlation functions of the BFSS matrix theory/D0-brane quantum mechanics. The result strengthens and extends Polchinski’s virial theorem bound to finite energies and gives the first non-trivial bound on ⟨Tr X 2 ...
Henry W. Lin
doaj   +1 more source

Analysis of Multipolar Linear Paul Traps for Ion–Atom Ultracold Collision Experiments

open access: yesAtoms, 2021
We evaluate the performance of multipole, linear Paul traps for the purpose of studying cold ion–atom collisions. A combination of numerical simulations and analysis based on the virial theorem is used to draw conclusions on the differences that result ...
M. Niranjan   +2 more
doaj   +1 more source

The virial theorem and the dark matter problem in hybrid metric-Palatini gravity [PDF]

open access: yes, 2013
Hybrid metric-Palatini gravity is a recently proposed theory, consisting of the superposition of the metric Einstein-Hilbert Lagrangian with an $f(\cal R)$ term constructed \`{a} la Palatini. The theory predicts the existence of a long-range scalar field,
Capozziello, Salvatore   +4 more
core   +2 more sources

The virial theorem and the dynamics of clusters of galaxies in the brane world models [PDF]

open access: yes, 2007
A version of the virial theorem, which takes into account the effects of the non-compact extra-dimensions, is derived in the framework of the brane world models.
C.-M. Chen   +11 more
core   +1 more source

Shafranov's virial theorem and magnetic plasma confinement [PDF]

open access: yes, 2000
Shafranov's virial theorem implies that nontrivial magnetohydrodynamical equilibrium configurations must be supported by externally supplied currents. Here we extend the virial theorem to field theory, where it relates to Derrick's scaling argument on ...
Antti J Niemi   +8 more
core   +5 more sources

The Two-Component Virial Theorem and the Physical Properties of Stellar Systems [PDF]

open access: yes, 1999
Motivated by present indirect evidences that galaxies are surrounded by dark matter halos, we investigate whether their physical properties can be described by a formulation of the virial theorem which explicitly takes into account the gravitational ...
Capelato, Hugo V.   +3 more
core   +3 more sources

VIRIAL THEOREM LIMITATIONS FOR THE TOROIDAL MAGNETIC ENERGY STORAGE CAUSED BY THE LOCATION OF SUPPORT STRUCTURE ELEMENTS AND THEIR MECHANICAL PROPERTIES

open access: yesТехнічна електродинаміка, 2022
Based on the virial theorem, the influence of the following factors to characteristics of mechanical support systems of toroidal magnetic energy storage is considered: the configuration of the coils, the support system elements location under compressive
Ю.М. Васецький
doaj   +1 more source

The virial theorem and exact properties of density functionals for periodic systems [PDF]

open access: yes, 2014
In the framework of density functional theory, scaling and the virial theorem are essential tools for deriving exact properties of density functionals. Preexisting mathematical difficulties in deriving the virial theorem via scaling for periodic systems ...
Baldsiefen, T.   +5 more
core   +2 more sources

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