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Gravitational structure formation, the cosmological problem and statistical physics

Pietronero, L.; Labini, F. Sylos - In: The European Physical Journal B - Condensed Matter and … 50 (2006) 1, pp. 285-289

Models of structure formation in the universe postulate that matter distributions observed today in galaxy catalogs arise, through a complex non-linear dynamics, by gravitational evolution from a very uniform initial state. Dark matter plays the central role of providing the primordial density...

Persistent link: https://www.econbiz.de/10009280580

Quantum Brownian motion and the second law of thermodynamics

Kim, ILki; Mahler, Günter - In: The European Physical Journal B - Condensed Matter and … 54 (2006) 3, pp. 405-414

We consider a single harmonic oscillator coupled to a bath at zero temperature. As is well-known, the oscillator then has a higher average energy than that given by its ground state. Here we show analytically that for a damping model with arbitrarily discrete distribution of bath modes and...

Persistent link: https://www.econbiz.de/10009281319

The second law of thermodynamics in the quantum Brownian oscillator at an arbitrary temperature

Kim, I.; Mahler, G. - In: The European Physical Journal B - Condensed Matter and … 60 (2007) 3, pp. 401-408

In the classical limit no work is needed to couple a system to a bath with sufficiently weak coupling strength (or with arbitrarily finite coupling strength for a linear system) at the same temperature. In the quantum domain this may be expected to change due to system-bath entanglement. Here we...

Persistent link: https://www.econbiz.de/10009281392

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

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

Persistent link: https://www.econbiz.de/10009325009

Apparent multifractality in financial time series

Bouchaud, J.-P.; Potters, M.; Meyer, M. - In: The European Physical Journal B - Condensed Matter and … 13 (2000) 3, pp. 595-599

Persistent link: https://www.econbiz.de/10009325087

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

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