Results 11 to 20 of about 249,605 (263)
Some exact Bradlow vortex solutions
Journal of High Energy Physics, 2017 We consider the Bradlow equation for vortices which was recently found by Manton and find a two-parameter class of analytic solutions in closed form on nontrivial geometries with non-constant curvature.
Sven Bjarke Gudnason, Muneto Nitta
doaj +1 more source
Spherically Symmetric C3 Matching in General Relativity
Universe, 2023 We study the problem of matching interior and exterior solutions to Einstein’s equations along a particular hypersurface. We present the main aspects of the C3 matching approach that involve third-order derivatives of the corresponding metric tensors in ...
Hernando Quevedo
doaj +1 more source
Anisotropic chiral cosmology: Exact solutions [PDF]
International Journal of Modern Physics D, 2021 In this work, we investigate the anisotropic Bianchi type I cosmological model in the chiral set-up in a twofold manner. Firstly, we consider a quintessence plus a [Formula: see text]-essence-like model, where two scalar fields but only one potential term is considered.
Díaz-Barrón, Luis Rey +3 more
openaire +3 more sources
Asymmetric inflation: Exact solutions [PDF]
Physical Review D, 2006 We provide exact solutions to the Einstein equations when the Universe contains vacuum energy plus a uniform arrangements of magnetic fields, strings, or domain walls. Such a universe has planar symmetry, i. e., it is homogeneous but, not isotropic. Further exact solutions are obtained when dust is included and approximate solutions are found for $w ...
Buniy, Roman V. +2 more
openaire +2 more sources
Physics Letters B, 2021 We show, in detail, that the only non-trivial black hole (BH) solutions for a neutral as well as a charged spherically symmetric space-times, using the class F(R)=R±F1(R), must-have metric potentials in the form h(r)=12−2Mr and h(r)=12−2Mr+q2r2.
G.G.L. Nashed
doaj +1 more source
Exact solutions of (0,2) Landau-Ginzburg models
Journal of High Energy Physics, 2020 In this paper we study the low energy physics of Landau-Ginzburg models with N $$ \mathcal{N} $$ = (0, 2) supersymmetry. We exhibit a number of classes of relatively simple LG models where the conformal field theory at the low energy fixed point can be ...
Abhijit Gadde, Pavel Putrov
doaj +1 more source
Exact Solutions in Modified Gravity Models
Entropy, 2012 We review the exact solutions in modified gravity. It is one of the main problems of mathematical physics for the gravity theory. One can obtain an exact solution if the field equations reduce to a system of ordinary differential equations. In this paper
Valery V. Obukhov, Andrey N. Makarenko
doaj +1 more source
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
openaire +3 more sources
Exact Solutions for Nonclassical Stefan Problems
International Journal of Differential Equations, 2010 We consider one-phase nonclassical unidimensional Stefan problems for a source function F which depends on the heat flux, or the temperature on the fixed face x=0.
Adriana C. Briozzo, Domingo A. Tarzia
doaj +1 more source
Two-mode coupled Burgers equation: Multiple-kink solutions and other exact solutions
Alexandria Engineering Journal, 2018 In this paper, we establish a new two-mode coupled Burgers equation (TMCBE). The necessary conditions that make the multiple kink solutions and the multiple singular kink solutions to TMCBE exist are founded using the simplified bilinear method. Moreover,
H.M. Jaradat
doaj +1 more source