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Modified Taylor vortices
(American Physical Society, 2017-12)
The classic problem reported by Taylor [Philos. Mag. 46, 671 (1923)] on the viscous decay of a planar vortex grid is here extended in three ways. First we present solutions for the vortex grid modulated in the direction ...
"Flux-flow" de Vórtices de Abrikosov-Josephson en Cerámicas Superconductoras de Bi-2223Flux-flow Abrikosov-Josephson vortices in bi - 2223 superconducting ceramics
(Universidad de La Habana. Facultad de Física, 2016-12)
Se reporta un método para caracterizar el transporte eléctrico a través defectos intragranulares en dos direcciones principales de una muestra superconductora. Los datos experimentales fundamentales, las curvas de I − V, ...
Description of a multifocal arrangement of asymmetric Kummer-beam optical vortices
(Elsevier, 2020-07)
In this work, we derived an analytic expression for the optical field generated by an off-axis Gaussian beam diffracted by a Discretized Vortex-Producing Lens. With this system, a multifocal arrangement of asymmetric optical ...
Vortices in the three-body electron-positron-proton continuum system induced by the positron-impact ionization of hydrogen
(IOP Publishing, 2015-01-30)
By means of a systematic theoretical study of the transition matrix element T for the ${{e}^{+}}+{\rm H}$ ionization collisions in a collinear geometry, we uncover the presence of three isolated zeros at intermediate impact ...
Vortex pseudomomentum and dissipation in a superfluid vortex lattice
(IOP Publishing, 2008-07)
We propose an alternative approach to the dissipative vortex dynamics occurring in a superfluid vortex lattice at finite temperatures. Focusing upon the pseudomomentum of a vortex and its surrounding quasiparticles, we ...
From skyrmions to Z2 vortices in distorted chiral antiferromagnets
(American Physical Society, 2019-12-11)
Swirling topological spin configurations, known as magnetic skyrmions, are known to be stabilized by different mechanisms. In particular, in chiral ferromagnets with Dzyaloshinskii-Moriya interaction (DMI), they appear in ...
General-Purpose Object-Oriented Framework for Vorticity-Dominated Flow Simulation
(American Institute of Aeronautics and Astronautics, 2020-06)
This paper describes the development of a computational framework for aerodynamic simulations based on the unsteady vortex lattice method under the object-oriented programming paradigm. The effort aims to fulfill the ...
Vortices in ionization collisions by positron impact
(IOP Publishing, 2013)
Vortices in ionization collisions
(Elsevier Science, 2016-02-15)
We review the concept of quantum vortices and their appearance in ionization collisions. By relaxing the usual geometrical restrictions on the momenta of the final-state, we study these vortices as submanifolds of codimension ...
Thermal properties of vortices on curved surfaces
(American Physical Society, 2018-01-16)
We use Monte Carlo simulations to study the finite temperature behavior of vortices in the XY model for tangent vector order on curved backgrounds. Contrary to naive expectations, we show that the underlying geometry does ...