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Behaviour of charged spinning massless particles
(Symmetry, 2019)
Saddle points and rare collisions under scaling approach in a Fermi accelerator with two nonlinear terms
(2013-04-01)
Rare collisions of a classical particle bouncing between two walls are studied. The dynamics is described by a two-dimensional, nonlinear and area-preserving mapping in the variables velocity and time at the instant that ...
Kerr-newman particles: Symmetries and other properties
(2007-01-01)
The Kerr-Newman (KN) solution to Einstein’s equation shows a gyromagnetic factor g = 2, typical of a Dirac spinor. This fact has prompted many attempts to consider this solution as the exterior metric for a fundamental ...
Mapping the density of particles over the surface of asteroid (101955) Bennu
(2017-01-01)
In the present work we study the motion of particles near the surface of Bennu. An application of the results is to give assistance for the selection of the sample site. Considering the gravitational potential given by the ...
On the symmetry of three identical interacting particles in a one-dimensional box
(Elsevier Academic Press Inc, 2015-11)
We study a quantum-mechanical system of three particles in a one-dimensional box with two-particle harmonic interactions. The symmetry of the system is described by the point group D3d. Group theory greatly facilitates the ...
Stability and Evolution of Fallen Particles Around the Surface of Asteroid (101955) Bennu
(Amer Geophysical Union, 2021-01-01)
In this study, we study the dynamics of particles around Bennu. The goal is to understand the stability, evolution, and final outcome of the simulated particles around the asteroid. According to the results, the particle ...
Swarm control designs applied to a micro-electro-mechanical gyroscope system (MEMS)
(2010-12-01)
This paper analyzes the non-linear dynamics of a MEMS Gyroscope system, modeled with a proof mass constrained to move in a plane with two resonant modes, which are nominally orthogonal. The two modes are ideally coupled ...