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Convective and absolute instabilities in the subcritical Ginzburg-Landau equation

Colet, P.; Walgraef, D.; Miguel, M. - In: The European Physical Journal B - Condensed Matter and … 11 (1999) 3, pp. 517-524

We study the nature of the instability of the homogeneous steady states of the subcritical real Ginzburg-Landau equation in the presence of group velocity. The shift of the absolute instability threshold of the trivial steady state, induced by the destabilizing cubic nonlinearities, is confirmed...

Persistent link: https://www.econbiz.de/10010992511

Multifractal critical phenomena in traffic and economic processes

Bershadskii, A. - In: The European Physical Journal B - Condensed Matter and … 11 (1999) 2, pp. 361-364

Multifractal critical phenomena with infinite-temperature critical point and with complex coexistence of the infinite and finite temperature critical points are considered and it is shown that strange attractors generated by cascades of period-doubling bifurcations (Feigenbaum scenario) as well...

Persistent link: https://www.econbiz.de/10010992538

Brownian rotation of classical spins: dynamical equations for non-bilinear spin-environment couplings

García-Palacios, J. - In: The European Physical Journal B - Condensed Matter and … 11 (1999) 2, pp. 293-308

Dynamical equations for a classical spin interacting with the surrounding medium are derived by means of the formalism of the oscillator-bath environment. The bilinear-coupling treatment of Jayannavar (Z. Phys. B <Emphasis Type="Bold">82, 153 (1991)) is extended to couplings that depend arbitrarily on the spin...</emphasis>

Persistent link: https://www.econbiz.de/10010992879

Role of noise in a market model with stochastic volatility

Bonanno, G.; Valenti, D.; Spagnolo, B. - In: The European Physical Journal B - Condensed Matter and … 53 (2006) 3, pp. 405-409

correlation between the two Wiener processes, which model the two white noise sources. This model can be useful to describe the … noise on the statistical properties of the escape time with reference to the noise enhanced stability (NES) phenomenon, that … is the noise induced enhancement of the lifetime of a metastable state. We observe NES effect in our model with …

Persistent link: https://www.econbiz.de/10009279971

The role of communication and imitation in limit order markets

Tedeschi, G.; Iori, G.; Gallegati, M. - In: The European Physical Journal B - Condensed Matter and … 71 (2009) 4, pp. 489-497

Persistent link: https://www.econbiz.de/10009280007

A random walker on a ratchet potential: effect of a non Gaussian noise

Mangioni, S. E.; Wio, H. S. - In: The European Physical Journal B - Condensed Matter and … 61 (2008) 1, pp. 67-73

We analyze the effect of a colored non Gaussian noise on a model of a random walker moving along a ratchet potential … correlated and non Gaussian. Among other aspects, in addition to a maximum in the current as the noise intensity is varied, we …

Persistent link: https://www.econbiz.de/10009280020

Stochastic resonance in an ion channel following the non-Arrhenius gating rate

Parc, Yong Woon; Koh, Duk-Su; Sung, Wokyung - In: The European Physical Journal B - Condensed Matter and … 69 (2009) 1, pp. 127-131

Persistent link: https://www.econbiz.de/10009280022

A wavelet-based method for multifractal image analysis. I. Methodology and test applications on isotropic and anisotropic random rough surfaces

Arnéodo, A.; Decoster, N.; Roux, S.G. - In: The European Physical Journal B - Condensed Matter and … 15 (2000) 3, pp. 567-600

Persistent link: https://www.econbiz.de/10009280026

Asymptotic regime in N random interacting species

Fiasconaro, A.; Valenti, D.; Spagnolo, B. - In: The European Physical Journal B - Condensed Matter and … 50 (2006) 1, pp. 189-194

multiplicative noise is analyzed. We find the role of the external noise on the long time probability distribution of the ith density …

Persistent link: https://www.econbiz.de/10009280043

On the probability distribution of stock returns in the Mike-Farmer model

Gu, G.-F.; Zhou, W.-X. - In: The European Physical Journal B - Condensed Matter and … 67 (2009) 4, pp. 585-592

Persistent link: https://www.econbiz.de/10009280046