Results 11 to 20 of about 8,969,614 (208)
Exact solutions in Chiral cosmology [PDF]
General Relativity and Gravitation, 2019 10 pages, no figures, title changed, version accepted for publication by Gen.
Andronikos Paliathanasis +2 more
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Diversity of exact solutions to a (3+1)-dimensional nonlinear evolution equation and its reduction
Computers and Mathematics With Applications, 2018 In this paper, a (3+1)-dimensional nonlinear evolution equation and its reduction is studied by use of the Hirota bilinear method and the test function method.
Wen-Xiu Ma, Jian-Guo Liu
exaly +2 more sources
Exact solutions for the biadjoint scalar field [PDF]
Physics Letters B, 2016 Biadjoint scalar theories are novel field theories that arise in the study of non-abelian gauge and gravity amplitudes. In this short paper, we present exact nonperturbative solutions of the field equations, and compare their properties with monopole ...
C.D. White
doaj +2 more sources
Fractal and Fractional, 2023 This paper studies the bifurcations of the exact solutions for the time–space fractional complex Ginzburg–Landau equation with parabolic law nonlinearity.
Wenjing Zhu +3 more
doaj +1 more source
Cosmological Solutions of Integrable F(R) Gravity Models with an Additional Scalar Field
Physical Sciences Forum, 2023 We consider F(R) cosmological models with a scalar field. For the R2 model in the spatially flat Friedmann–Lemaître–Robertson–Walker metric, the Ricci scalar R can smoothly change its sign during the evolution if and only if the scalar field is a phantom
Sergey Vernov, Vsevolod Ivanov
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EXACT INFLATIONARY SOLUTIONS [PDF]
International Journal of Modern Physics D, 1998 We present a new class of exact inflationary solutions for the evolution of a universe with spatial curvature, filled with a perfect fluid, a scalar field with potential V±(ϕ) = λ(ϕ2 ± δ2)2 and a cosmological constant Λ. With the V+(ϕ) potential and a negative cosmological constant, the scale factor experiments a graceful exit.
Piccinelli, Gabriella +2 more
openaire +3 more sources
Vacua and exact solutions in lower-D limits of EGB [PDF]
The European Physical Journal C, 2020 We consider the action principles that are the lower dimensional limits of the Einstein–Gauss–Bonnet gravity via the Kaluza–Klein route. We study the vacua and obtain some exact solutions. We find that the reality condition of the theories may select one
Liang Ma, H. Lu
semanticscholar +1 more source
, 2021 In this article, our focus is to extract the diverse exact solutions to the conformable time-fractional modified nonlinear Schrodinger equation (CTFMNLSE) that describes the propagation of water waves in the ocean engineering.
U. Younas +5 more
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New traveling wave exact solutions to the coupled Klein–Gordon system of equations
Partial Differential Equations in Applied Mathematics, 2022 A system of coupled Klein–Gordon nonlinear partial differential equations are considered in this paper and several new families of exact solutions for this system are derived.
Subin P. Joseph
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The exact solutions of the stochastic Ginzburg–Landau equation
, 2021 The main goal of this paper is to obtain the exact solutions of the stochastic real-valued Ginzburg–Landau equation, which is forced by multiplicative noise in the Ito sense.
W. W. Mohammed +5 more
semanticscholar +1 more source