Zobrazeno 1 - 10
of 360
pro vyhledávání: '"Hochberg, D."'
Autor:
Berera, A., Hochberg, D.
Publikováno v:
Phys.Rev.Lett.99:254501,2007
The path integral for randomly forced incompressible fluids is shown to have an underlying Becchi-Rouet-Stora (BRS) symmetry as a consequence of Galilean invariance. This symmetry must be respected to have a consistent generating functional, free fro
Externí odkaz:
http://arxiv.org/abs/0711.0825
Publikováno v:
Phys. Rev. E 74, 057102 (2006) (4 pages)
We study an autocatalytic reaction-diffusion scheme, the Gray-Scott model, when the mixing processes do not homogenize the reactants. Starting from the master equation, we derive the resulting coupled, nonlinear, stochastic partial differential equat
Externí odkaz:
http://arxiv.org/abs/cond-mat/0701475
Publikováno v:
The Journal of Chemical Physics 122, 214701 (2005)
The influence that intrinsic local density fluctuations can have on solutions of mean-field reaction-diffusion models is investigated numerically by means of the spatial patterns arising from two species that react and diffuse in the presence of stro
Externí odkaz:
http://arxiv.org/abs/cond-mat/0507165
Publikováno v:
Phys. Rev. E. 71, 31908 (2005)
A new experimental colonial pattern and pattern transition observed in E. coli MG1655 swarming cells grown on semi-solid agar are described. We present a reaction-diffusion model that, taking into account the slime generated by these cells and its in
Externí odkaz:
http://arxiv.org/abs/nlin/0507009
Publikováno v:
Physica A 334 (2004) 67-77
We investigate how additive weak noise (correlated as well as uncorrelated) modifies the parameters of the Gray-Scott (GS) reaction diffusion system by performing numerical simulations and applying a Renormalization Group (RG) analysis in the neighbo
Externí odkaz:
http://arxiv.org/abs/cond-mat/0507139
We show how the interplay of non-linear dynamics, self-gravity, and fluctuations leads to self-affine behavior of matter density correlations quite generically, i.e., with a power-law exponent whose value does not depend in a very direct way on the s
Externí odkaz:
http://arxiv.org/abs/astro-ph/9901208
The observable Universe is described by a collection of equal mass galaxies linked into a common unit by their mutual gravitational interaction. The partition function of this system is cast in terms of Ising model spin variables and maps exactly ont
Externí odkaz:
http://arxiv.org/abs/gr-qc/9509016
The partition function of a system of galaxies in gravitational interaction can be cast in an Ising Model form, and this reformulated via a Hubbard--Stratonovich transformation into a three dimensional stochastic and classical scalar field theory, wh
Externí odkaz:
http://arxiv.org/abs/astro-ph/9506127
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