Results 21 to 30 of about 2,770 (52)

Thermodynamics of P−V criticality in d-dimensional AdS black holes surrounded by a perfect fluid in Rastall theory

Nuclear Physics B
We study a d-dimensional Anti-de Sitter (AdS) black hole surrounded by a static anisotropic quintessence field within the framework of Rastall theory. The solution is characterized by several parameters including its mass (M), field structure parameter ...
Md Sabir Ali
doaj   +1 more source

Solitary wave solutions of two KdV-type equations

Open Physics, 2018
The present paper investigates the solitary wave solutions of the nonlinear evolution equations with power nonlinearties. The study has been carried out for two examples of KdV-type equations, namely, the nonlinear dispersive equation and the generalised
Al-Ghafri Khalil Salim
doaj   +1 more source

Some notes on the Kruskal - Szekeres completion

, 2010
The Kruskal - Szekeres (KS) completion of the Schwarzschild spacetime is open to Synge's methodological criticism that the KS procedure generates "good" coordinates from "bad".
Buchdahl H A, Chandrasekhar S, Kayll Lake, Klösch T, Lake K, Lake K, Synge J L, Szekeres G   +7 more
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New results for Petrov type D pure radiation fields [PDF]

, 2009
We present a new family of Petrov type D pure radiation spacetimes with a shear-free, non-diverging geodesic principal null congruence.Comment: 4 pages; changed the appearance of some v's and nu'
Kerstin E. Kunze, Liselotte De Groote, Marc Mars, Miguel Angel Vázquez-Mozo, Norbert Van den Bergh   +4 more
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Utmost travelling wave phenomena to the fractional type nonlinear evolution equation in mathematical physics

Partial Differential Equations in Applied Mathematics
In applied physics and engineering, non-linear fractional types of partial differential equations become increasingly prominent as an estimation technique to explain a wide variety of non-linear phenomena.
U.H.M. Zaman, Mohammad Asif Arefin, M. Ali Akbar, M. Hafiz Uddin   +3 more
doaj   +1 more source

Solitary and compacton solutions of fractional KdV-like equations

Open Physics, 2016
In this paper, based on Jumarie’s modified Riemann-Liouville derivative, we apply the fractional variational iteration method using He’s polynomials to obtain solitary and compacton solutions of fractional KdV-like equations.
Tang Bo, Fan Yingzhe, Zhao Jianping, Wang Xuemin   +3 more
doaj   +1 more source

Exact solutions and conservation laws for the modified equal width-Burgers equation

Open Physics, 2018
In this paper we study the modified equal width-Burgers equation, which describes long wave propagation in nonlinear media with dispersion and dissipation.
Khalique Chaudry Masood, Simbanefayi Innocent   +1 more
doaj   +1 more source

An axially symmetric solution of metric-affine gravity

, 1996
We present an exact stationary {\it axially symmetric} vacuum solution of metric-affine gravity (MAG) which generalises the recently reported spherically symmetric solution.
Ciufolini I, Dereli T, E J Vlachynsky, F W Hehl, Hehl F W, Lopuszanski J, Plebanski J F, Ponomariov V N, R Tresguerres, Tresguerres R, Tucker R W, Yu N Obukhov   +11 more
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Sources for the Majumdar-Papapetrou Space-Times [PDF]

, 1998
Einstein's field equations are solved exactly for static charged dust distributions. These solutions generalize the Majumdar Papapetrou metrics. Maxwell's equations lead to the equality of charge and mass densities of the dust distribution.
Gurses, Metin
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Time fractional modified KdV-type equations: Lie symmetries, exact solutions and conservation laws

Open Physics, 2019
In the paper, we research a time fractional modified KdV-type equations.We give the symmetry reductions and exact solutions of the equations, and we investigate the convergence of the solutions.
He Fangqin, Li Lianzhong
doaj   +1 more source