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34 papers · 1 filter
Critical phenomena in the spreading of opinion consensus and disagreement
Andrés Chacoma, Damián H. Zanette
We consider a class of models of opinion formation where the dissemination of individual opinions occurs through the spreading of local consensus and disagreement. We study the eme…
Avoiding extinction by migration: The case of the head louse
Octavio Cabrera, Damián H. Zanette
The possibility of spreading by migration, colonizing new spatial domains suitable for development and reproduction, can substantially relieve a biological population from the risk…
Synchronization of a forced self-sustained Duffing oscillator
Damián H. Zanette, Sebastián I. Arroyo
We study the dynamics of a mechanical oscillator with linear and cubic forces -the Duffing oscillator- subject to a feedback mechanism that allows the system to sustain autonomous…
Functional approach to quantum friction: effective action and dissipative force
M. Belén Farías, César D. Fosco, Fernando C. Lombardo +2
We study the Casimir friction due to the relative, uniform, lateral motion of two parallel semitransparent mirrors coupled to a vacuum real scalar field, . We follow a functiona…
Remnant group of local Lorentz transformations in f(T) theories
Rafael Ferraro, Franco Fiorini
It is shown that the extended teleparallel gravitational theories, known as f(T) theories, inherit some on shell local Lorentz invariance associated with the tetrad field defining…
Duffing revisited: Phase-shift control and internal resonance in self-sustained oscillators
Sebastián I. Arroyo, Damián H. Zanette
We address two aspects of the dynamics of the forced Duffing oscillator which are relevant to the technology of micromechanical devices and, at the same time, have intrinsic signif…