Buscar
Mostrando ítems 21-30 de 471
Bianchi IX cosmologies in the Einstein-Skyrme system in a sector with nontrivial topological charge
(2019)
The dynamics of the most general Bianchi IX cosmology with three time dependent scale factors for the Einstein-Skyrme system are analyzed. For the Skyrmion, a generalized hedgehog ansatz with unit baryon charge is introduced. ...
Acerca de las soluciones no triviales para un problema de Dirichlet asintóticamente lineal / About the solutions for a nontrivial Dirichlet problem asympotic linear
(2010)
En particular el problema de Dirichlet con condición de frontera, genera una ecuación diferencial relacionada con el operador laplaciano, el estudio de esta ecuación al ser ligada con los espacios de Sobolev y el teorema ...
On symmetries of singular implicit ODEs
(2014)
We study implicit ODEs, cubic in derivative, with infinitesimal symmetry at singular points. Cartan showed that even at regular points the existence of nontrivial symmetry imposes restrictions on the ODE. Namely, this ...
A transition from a decelerated to an accelerated phase of the universe expansion from the simplest non-trivial polynomial function of T in the f(R, T) formalism
(2016-07-01)
In this work we present cosmological solutions from the simplest non-trivial polynomial function of T in f(R, T) theory of gravity, with R and T standing for the Ricci scalar and trace of the energy-momentum tensor, ...
Free boundary solutions to a log-singular elliptic equation
(Ios PressAmsterdamHolanda, 2013)
Infinite conformal symmetry and emergent chiral fields of topologically nontrivial configurations : From Yang-Mills-Higgs theory to the Skyrme model
(2022-11-15)
In this manuscript, we discuss a remarkable phenomenon concerning nonlinear and nonintegrable field theories in (3+1) dimensions, living at finite density and possessing nontrivial topological charges and non-Abelian ...