Zobrazeno 1 - 10
of 474
pro vyhledávání: '"Droz M"'
We present a renormalization group (RG) approach to explain universal features of extreme statistics, applied here to independent, identically distributed variables. The outlines of the theory have been described in a previous Letter, the main result
Externí odkaz:
http://arxiv.org/abs/1004.0642
We investigate in detail the model of a trophic web proposed by Amaral and Meyer [Phys. Rev. Lett. 82, 652 (1999)]. We focused on small-size systems that are relevant for real biological food webs and for which the fluctuations are playing an importa
Externí odkaz:
http://arxiv.org/abs/0712.2654
Publikováno v:
Journal of Chemical Physics 122, 204502 (2005).
The effects of an external electric field on the formation of Liesegang patterns are investigated. The patterns are assumed to emerge from a phase separation process in the wake of a diffusive reaction front. The dynamics is described by a Cahn-Hilli
Externí odkaz:
http://arxiv.org/abs/cond-mat/0502104
Publikováno v:
Journal of Chemical Physics 122, 024512 (2005).
We study the effects of an external electric field on both the motion of the reaction zone and the spatial distribution of the reaction product, $C$, in an irreversible $A^- +B^+ \to C$ reaction-diffusion process. The electrolytes $A\equiv (A^+,A^-)$
Externí odkaz:
http://arxiv.org/abs/cond-mat/0409126
Publikováno v:
J.Phys.A: Math.Gen. 37, 1465-78 (2004)
Finite-size scaling functions are investigated both for the mean-square magnetization fluctuations and for the probability distribution of the magnetization in the one-dimensional Ising model. The scaling functions are evaluated in the limit of the t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308442
Autor:
Lipowski, A., Droz, M.
Publikováno v:
Physical Review E 66, 016118 (2002)
Solving numerically master equation for a recently introduced urn model, we show that the fourth- and sixth-order cumulants remain constant along an exactly located line of critical points. Obtained values are in very good agreement with values predi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0201472
Publikováno v:
Phys. Rev. E, 65, 046140 (2002)
The probability density function (PDF) of the roughness, i.e., of the temporal variance, of 1/f^alpha noise signals is studied. Our starting point is the generalization of the model of Gaussian, time-periodic, 1/f noise, discussed in our recent Lette
Externí odkaz:
http://arxiv.org/abs/cond-mat/0112277
Autor:
Lipowski, A., Droz, M.
Publikováno v:
Phys. Rev. E 65, 056114 (2002)
A nonequilibrium Potts-like model with $q$ absorbing states is studied using Monte Carlo simulations. In two dimensions and $q=3$ the model exhibits a discontinuous transition. For the three-dimensional case and $q=2$ the model exhibits a continuous,
Externí odkaz:
http://arxiv.org/abs/cond-mat/0112130
Autor:
Lipowski, A., Droz, M.
Publikováno v:
Physical Review E 66, 016106 (2002)
We study a one-dimensional, nonequilibrium Potts-like model which has $q$ symmetric absorbing states. For $q=2$, as expected, the model belongs to the parity conserving universality class. For $q=3$ the critical behaviour depends on the dynamics of t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110404
Publikováno v:
Phys.Rev.Lett. 87, 240601 (2001)
We study the finite-size scaling of the roughness of signals in systems displaying Gaussian 1/f power spectra. It is found that one of the extreme value distributions (Gumbel distribution) emerges as the scaling function when the boundary conditions
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105599