Results 21 to 30 of about 1,584,853 (313)

The Quantization of Gravity: Quantization of the Hamilton Equations [PDF]

open access: yesUniverse, 2021
We quantize the Hamilton equations instead of the Hamilton condition. The resulting equation has the simple form −Δu=0 in a fiber bundle, where the Laplacian is the Laplacian of the Wheeler–DeWitt metric provided n≠4. Using then separation of variables, the solutions u can be expressed as products of temporal and spatial eigenfunctions, where the ...
openaire   +3 more sources

O viés doméstico no comércio interestadual de produtos florestais no Brasil Domestic bias in the forest product interstate trade in Brazil

open access: yesRevista Árvore, 2009
Este estudo procurou estimar o efeito doméstico do comércio entre os estados brasileiros, utilizando-se dados sobre as atividades do setor florestal de acordo com a classificação nacional de atividades econômicas fiscais (CNAE-F).
Orlando Monteiro da Silva   +1 more
doaj   +1 more source

Fluid-gravity correspondence in the scalar-tensor theory of gravity: (in)equivalence of Einstein and Jordan frames

open access: yesJournal of High Energy Physics, 2020
The duality of gravitational dynamics (projected on a null hypersurface) and of fluid dynamics is investigated for the scalar tensor (ST) theory of gravity. The description of ST gravity, in both Einstein and Jordan frames, is analyzed from fluid-gravity
Krishnakanta Bhattacharya   +2 more
doaj   +1 more source

Equivalent equations of motion for gravity and entropy [PDF]

open access: yesJournal of High Energy Physics, 2017
7+4 pages, 3 ...
Bartlomiej Czech   +4 more
openaire   +3 more sources

MEASURING SMUGGLING THROUGH THE GRAVITY EQUATION AND THE MIMIC MODEL: EVIDENCE FROM THE REPUBLIC OF MOLDOVA [PDF]

open access: yesEastern European Journal of Regional Studies
Smuggling represents a critical, unobservable challenge for emerging economies, particularly the Republic of Moldova, hindering fiscal stability, market functionality, and progress toward European Union integration. While existing literature often relies
Grigore BUTUCEA
doaj   +1 more source

Stochastic equations for gravity [PDF]

open access: yesPhysics Letters B, 1986
Abstract The Langevin equations governing stochastic quantization of gravity are established. These equations hold true, independently of the value of the torsion. They are covariant under the BRS symmetry associated to local diffeomorphisms and Lorentz transformations.
openaire   +1 more source

Nonlocal gravity: Modified Poisson's equation [PDF]

open access: yesJournal of Mathematical Physics, 2012
The recent nonlocal generalization of Einstein's theory of gravitation reduces in the Newtonian regime to a nonlocal and nonlinear modification of Poisson's equation of Newtonian gravity. The nonlocally modified Poisson equation implies that nonlocality can simulate dark matter. Observational data regarding dark matter provide limited information about
Chicone, C., Mashhoon, B.
openaire   +2 more sources

BREXIT and Foreign Direct Investment: Key Issues and New Empirical Findings

open access: yesInternational Journal of Financial Studies, 2018
This contribution takes a new look at the gravity equation model in relation to foreign direct investment (FDI) of leading industrialized countries which presents a useful basis for assessing certain potential impacts arising from BREXIT—the ...
Paul J. J. Welfens, Fabian J. Baier
doaj   +1 more source

Multiregional Models of Economic Interactions: Comparative Analysis

open access: yesПространственная экономика
The article deals with the problems of measuring spatial multipliers on the basis of multiregional models of economic interactions. Two lines of comparative analysis of multiregional models are distinguished: 1) depending on the choice of trade ...
Natalya Gennadievna Dzhurka
doaj   +1 more source

The Equation of State for Scalar-Tensor Gravity [PDF]

open access: yesProgress of Theoretical Physics, 2008
We show that the field equation of Brans-Dicke gravity and scalar-tensor gravity can be derived as the equation of state of Rindler spacetime, where the local thermodynamic equilibrium is maintained. Our derivation implies that the effective energy can not feel the heat flow across the Rindler horizon.
Wu, Shao-Feng   +2 more
openaire   +2 more sources

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