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Nonequilibrium fluctuation induced escape from a metastable state

Chaudhuri, J. Ray; Barik, D.; Banik, S. K. - In: The European Physical Journal B - Condensed Matter and … 55 (2007) 3, pp. 333-336

Based on a simple microscopic model where the bath is in a non-equilibrium state we study the escape from a metastable state in the over-damped limit. Making use of Fokker-Planck-Smoluchowski description we derive the time dependent escape rate in the non-stationary regime in closed analytical...

Persistent link: https://www.econbiz.de/10009282783

Nonstationary stochastic resonance viewed through the lens of information theory

Goychuk, I.; Hänggi, P. - In: The European Physical Journal B - Condensed Matter and … 69 (2009) 1, pp. 29-35

Persistent link: https://www.econbiz.de/10009282796

Stochastic dynamics of a sheared granular medium

Petri, A.; Baldassarri, A.; Dalton, F.; Pontuale, G.; … - In: The European Physical Journal B - Condensed Matter and … 64 (2008) 3, pp. 531-535

Persistent link: https://www.econbiz.de/10009282803

Fractional approach, quantum statistics, and non-crystalline solids at very low temperatures

Lenzi, E. K.; Oliveira, B. F. de; Astrath, N. G.C.; … - In: The European Physical Journal B - Condensed Matter and … 62 (2008) 2, pp. 155-158

We consider nonlocal effects, obtained by incorporating fractional derivatives in the kinetic energy of a conventional Hamiltonian, to analyze physical properties of non-crystalline solids at very low temperature. By using thermal Green functions, we deduce some experimentally observable...

Persistent link: https://www.econbiz.de/10009282833

Evolution of imitation networks in Minority Game model

Lavička, H.; Slanina, F. - In: The European Physical Journal B - Condensed Matter and … 56 (2007) 1, pp. 53-63

The Minority Game is adapted to study the “imitation dilemma”, i.e. the tradeoff between local benefit and global harm coming from imitation. The agents are placed on a substrate network and are allowed to imitate more successful neighbours. Imitation domains, which are oriented trees, are...

Persistent link: https://www.econbiz.de/10009282861

Energy fluctuations in vibrated and driven granular gases

Visco, P.; Puglisi, A.; Barrat, A.; Wijland, F. van; … - In: The European Physical Journal B - Condensed Matter and … 51 (2006) 3, pp. 377-387

We investigate the behavior of energy fluctuations in several models of granular gases maintained in a non-equilibrium steady state. In the case of a gas heated from a boundary, the inhomogeneities of the system play a predominant role. Interpreting the total kinetic energy as a sum of...

Persistent link: https://www.econbiz.de/10009282978

Dynamic renormalization-group analysis of the d+1 dimensional Kuramoto-Sivashinsky equation with both conservative and nonconservative noises

Zhang, L.; Tang, G.; Xun, Z.; Han, K.; Chen, H.; Hu, B. - In: The European Physical Journal B - Condensed Matter and … 63 (2008) 2, pp. 227-234

exponents z=2.866 and α=-0.866 , which show that, as in the 1 + 1 dimensions situation, the existence of the conservative noise … equation, where the conservative noise is not taken into account. Copyright EDP Sciences/Società Italiana di Fisica …

Persistent link: https://www.econbiz.de/10009282979

Stochastic resonance and energy optimization in spatially extended dynamical systems

Lai, Y.-C.; Park, K.; Rajagopalan, L. - In: The European Physical Journal B - Condensed Matter and … 69 (2009) 1, pp. 65-70

Persistent link: https://www.econbiz.de/10009283061

Moment equations for a spatially extended system of two competing species

Valenti, D.; Schimansky-Geier, L.; Sailer, X.; Spagnolo, B. - In: The European Physical Journal B - Condensed Matter and … 50 (2006) 1, pp. 199-203

The dynamics of a spatially extended system of two competing species in the presence of two noise sources is studied. A … correlated dichotomous noise acts on the interaction parameter and a multiplicative white noise affects directly the dynamics of … Gaussian approximation. In this formalism the system dynamics is analyzed for different values of the multiplicative noise …

Persistent link: https://www.econbiz.de/10009283092

Impact of network activity on noise delayed spiking for a Hodgkin-Huxley model

Ozer, M.; Graham, L. J. - In: The European Physical Journal B - Condensed Matter and … 61 (2008) 4, pp. 499-503

In a Hodgkin-Huxley neuron model driven just above threshold, external noise can increase both jitter and latency of … the first spike, an effect called “noise delayed decay” (NDD). This phenomenon is important when considering how neuronal …

Persistent link: https://www.econbiz.de/10009283104