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Is Gravity an Entropic Force? [PDF]

open access: yes, 2011
The remarkable connections between gravity and thermodynamics seem to imply that gravity is not fundamental but emergent, and in particular, as Verlinde suggested, gravity is probably an entropic force.
Shan, Gao, Shan Gao
core   +1 more source

Entropy and Gravity [PDF]

open access: yesEntropy, 2012
The effect of gravity upon changes of the entropy of a gravity-dominated system is discussed. In a universe dominated by vacuum energy, gravity is repulsive, and there is accelerated expansion. Furthermore, inhomogeneities are inflated and the universe approaches a state of thermal equilibrium. The difference between the evolution of the cosmic entropy
openaire   +5 more sources

Gravity Assist as a Test of Relativistic Gravity

open access: yesGravitation and Cosmology, 2022
9 pages, 2 ...
Bolokhov, S. V.   +2 more
openaire   +2 more sources

Methods for Calculating Empires in Quasicrystals

open access: yesCrystals, 2017
This paper reviews the empire problem for quasiperiodic tilings and the existing methods for generating the empires of the vertex configurations in quasicrystals, while introducing a new and more efficient method based on the cut-and-project technique ...
Fang Fang, Dugan Hammock, Klee Irwin
doaj   +1 more source

International trade without CES : estimating translog gravity [PDF]

open access: yes, 2012
This paper derives a micro-founded gravity equation based on a translog demand system that allows for flexible substitution patterns across goods. In contrast to the standard CES-based gravity equation, translog gravity generates an endogenous trade cost
Novy, Dennis
core   +1 more source

GRAVITY

open access: yes, 2023
I often hear scientists say that gravity is a purely attractive force. In his 1967 article “GRAVITATION”, World Book Encyclopedia’s Robert F. Paton M.Sc., Ph.D. presents a view closer in time to General Relativity’s formulation when he writes –   “Einstein says that bodies do not attract each other at a distance.
openaire   +2 more sources

La Soufriere Volcanic Eruptions Launched Gravity Waves Into Space [PDF]

open access: yes, 2022
Atmospheric gravity waves can be excited by explosive volcanic eruptions and may reach Earth's upper atmosphere. In this study, we report on mesoscale concentric gravity waves observed in the mesopause airglow layer following the La Soufriere volcano ...
Kahn, Ralph   +13 more
core   +1 more source

The flavour of gravity [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2006
By attaching five (complex) anticommuting property coordinates to the four (real) commuting space-time ones, it is possible to accommodate all the known fundamental particles in their three generations. A general relativistic extension to space-time-property can be carried out such that the gauge fields find their place in the space-property sector and
openaire   +2 more sources

The Unexpected Fractal Signatures in Fibonacci Chains

open access: yesFractal and Fractional, 2019
In this paper, a new fractal signature possessing the cardioid shape in the Mandelbrot set is presented in the Fourier space of a Fibonacci chain with two lengths, L and S, where L / S = ϕ . The corresponding pointwise dimension is 1.7.
Fang Fang, Raymond Aschheim, Klee Irwin
doaj   +1 more source

GRAVITY AND MIRROR GRAVITY IN PLEBANSKI FORMULATION [PDF]

open access: yesInternational Journal of Modern Physics A, 2013
We present several theories of four-dimensional gravity in the Plebanski formulation, in which the tetrads and the connections are the independent dynamical variables. We consider the relation between different versions of gravitational theories: Einsteinian, "topological," "mirror" gravities and gravity with torsion.
bennett, D.L.   +3 more
openaire   +3 more sources

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