CASADO VÁZQUEZ , José Manuel

Ruggero Giuseppe Boscovich (1711-1787) llevó a cabo lo que probablemente es el más ambicioso intento de unificación de toda la física del siglo XVIII. A pesar de que sus ideas estaban muy alejadas de las posiciones de los atomistas de la época, desde finales del siglo XIX se viene considerando a Boscovich como uno de los representantes más...

Son escasos los estudios sobre las teorías cinéticas formuladas antes de que las contribuciones de Maxell y Boltzmann a finales del siglo XIX, establecieran el marco teórico actual de dicha disciplina. El propósito de este trabajo es llevar a cabo un análisis del desarrollo de las dos ideas esenciales que subyacen en las formulaciones...

The focus of this Letter is on the activity of a network of neurons pairwise coupled by inhibitory connections. Each neuron is represented by a two-dimensional map capable, when isolated, of a rich variety of complex dynamical regimes. It is shown that the network exhibits a stimulus-dependent sequential activation and inactivation of subgroups...

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In this article, we investigate the stochastic resonance (SR) effect in a finite array of noisy bistable systems with nearest-neighbor coupling driven by a weak time-periodic driving force. The array is characterized by a collective variable. By means of numerical simulations, the signal-to-noise ratio (SNR) and the gain are estimated as...

We study the phenomenon of nonlinear stochastic resonance (SR) in a complex noisy system formed by a finite number of interacting subunits driven by rectangular pulsed time periodic forces. We find that very large SR gains are obtained for subthreshold driving forces with frequencies much larger than the values observed in simpler...

We analyze the noise-induced synchronization between a collective variable characterizing a complex system with a finite number of interacting bistable units and time-periodic driving forces. A random phase process associated to the collective stochastic variable is defined. Its average phase frequency and average phase diffusion are used to...

The probability of remaning in a given state is evaluated for a two-level system that can cross repeatedly and periodically as a function of a control parameter. The possibility of multiple Zener transitions between the surfaces introduces the issue of the appropriate initial conditions for each successive transition. We devise a simple model,...

We discuss the equilibrium of a single collective variable characterizing a finite set of coupled, noisy, bistable systems as the noise strength, the size and the coupling parameter are varied. We identify distinct regions in parameter space. Our finite size results indicate important qualitative differences with respect to those obtained in...