Results 61 to 70 of about 559,362 (165)

Einstein Equations: Exact Solutions [PDF]

open access: yes, 2006
8 pages, published in Encyclopedia of Mathematical Physics, eds. J.-P. Francoise, G. L. Naber and Tsou S. T., Oxford: Elsevier, 2006 (ISBN 978-0-1251-2666-3), volume 2, page 165-173. (The number of references had to be limited, some additional references are indicated inside the text only.)
openaire   +3 more sources

Exact solution of a two-parameter extended Bariev model

open access: yesNuclear Physics B
An exactly solvable strongly correlated electron model with two independent parameters is constructed in the frame of the quantum inverse scattering method, which can be seen as a generalization of the Bariev model. Through the Bethe ansatz method, a set
Mingchen Zheng   +4 more
doaj   +1 more source

Exact analytical Taub-NUT like solution in f(T) gravity

open access: yesEuropean Physical Journal C: Particles and Fields
We construct exact analytical Taub-NUT solutions in the context of f(T) gravity. We study the physical properties of the solutions, and compare them with those of the Taub-NUT solution in Einstein gravity.
Joshua G. Fenwick, Masoud Ghezelbash
doaj   +1 more source

Accurate Approximations for a Nonlinear SIR System via an Efficient Analytical Approach: Comparative Analysis

open access: yesAxioms
The homotopy perturbation method (HPM) is one of the recent fundamental methods for solving differential equations. However, checking the accuracy of this method has been ignored by some authors in the literature.
Mona Aljoufi
doaj   +1 more source

Numerical Studied for Solving Fuzzy Integro-Differential Equations via Caputo Fractional Derivative

open access: yesAcademic Science Journal
In this paper, we extended some numerical methods to solve fuzzy integro differential equations. The considered problem involves the fractional Caputo derivatives under some conditions on the ordered. As we combine Euler's method with composite Simpsons
Ruaa N. Abduallah, Rokan khaji
doaj   +1 more source

Analysis of solitary wave behavior under stochastic noise in the generalized schamel equation

open access: yesScientific Reports
This study investigates the dynamics of solitary wave solutions to the stochastic generalized Schamel (GS) model under the influence of white noise. By employing the wave transformation technique, we derive the governing stochastic equation and analyze ...
Khalid A. Alsatami
doaj   +1 more source

Exact Inflationary Solution On The Brane

open access: yes, 2001
We study the evolution of universe with a single scalar field of constant potential minimally coupled to gravity in the brane world cosmology.We find an exact inflationary solution which is not in slow roll.We discuss the limiting cases of the solution.We show that at late times the solution is asymptotic to the de Sitter solution independently of the ...
openaire   +3 more sources

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