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Mostrando ítems 21-25 de 25
Artículo
Analytical approach to soliton ratchets in asymmetric potentials
(2005)
We use soliton perturbation theory and collective coordinate ansatz to investigate the mechanism of soliton ratchets in a driven and damped asymmetric double sine-Gordon equation. We show that, at the second order of the ...
Artículo
Soliton ratchet induced by random transitions among symmetric sine-Gordon potentials
(AIP Publishing, 2019)
The generation of net solitonmotion induced by randomtransitions among N symmetric phase-shifted sine-Gordon potentials is investigated, in the absence of any external force and without any thermal noise. The phase shifts ...
Artículo
Hysteresis in vibrated granular media
(Elsevier, 2000)
Some general dynamical properties of models for compaction of granular media based on master equations are analyzed. In particular, a one-dimensional lattice model with short-ranged dynamical constraints is considered. The ...
Artículo
Strong nonexponential relaxation and memory effects in a fluid with nonlinear drag
(American Physical Society, 2021-12)
We analyze the dynamical evolution of a fluid with nonlinear drag, for which binary collisions are elastic, described at the kinetic level by the Enskog-Fokker-Planck equation. This model system, rooted in the theory of ...
Artículo
Collective coordinates theory for discrete soliton ratchets in the sine-Gordon model
(American Physical Society, 2014)
A collective coordinate theory is developed for soliton ratchets in the damped discrete sine-Gordon model driven by a biharmonic force. An ansatz with two collective coordinates, namely the center and the width of the ...