Artículo
Pinning-depinning transition in a stochastic growth model for the evolution of cell colony fronts in a disordered medium
Fecha de publicación:
11/2016
Editorial:
American Physical Society
Revista:
Physical Review E: Statistical, Nonlinear and Soft Matter Physics
ISSN:
2470-0045
e-ISSN:
2470-0053
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We study a stochastic lattice model for cell colony growth, which takes into account proliferation, diffusion, and rotation of cells, in a culture medium with quenched disorder. The medium is composed both by sites that inhibit any possible change in the internal state of the cells, representing the disorder, as well as by active medium sites, that do not interfere with the cell dynamics. By means of Monte Carlo simulations we find that the velocity of the growing interface, which is taken as the order parameter of the model, strongly depends on the density of active medium sites ($ho_A$). In fact, the model presents a (continuous) second-order pinning-depinning transition at a certain critical value of $ho_A^{crit}$, such as for $ho_A>ho_A^{crit}$ the interface moves freely across the disordered medium, but for $ho_A<ho_a^{crit}$ the="" interface="" becomes="" irreversible="" pinned="" by="" disorder.="" determining="" relevant="" critical="" exponents,="" our="" study="" reveals="" that="" within="" depinned="" phase="" can="" be="" rationalized="" in="" terms="" of="" kardar-parisi-zhang="" universality="" class,="" but="" when="" approaching="" threshold,="" non-linear="" term="" equation="" tends="" to="" vanish="" and="" then="" belongs="" quenched="" edwards-wilkinson="" class.="" <="" body="" />
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Articulos(IFLYSIB)
Articulos de INST.FISICA DE LIQUIDOS Y SIST.BIOLOGICOS (I)
Articulos de INST.FISICA DE LIQUIDOS Y SIST.BIOLOGICOS (I)
Citación
Moglia, Belén; Albano, Ezequiel Vicente; Guisoni, Nara Cristina; Pinning-depinning transition in a stochastic growth model for the evolution of cell colony fronts in a disordered medium; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 94; 5; 11-2016; 1-33
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