Phase ordering dynamics of reconstituting particles

• Autores: Gómez Albarracín, Flavia Alejandra; Rosales, Héctor Diego; Grynberg, Marcelo Daniel
• Año de publicación: 2017
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: Física; Kmers chains; Dynamics; Evolution operator; Correlations
• Institución: Universidad Nacional de La Plata

We consider the large-time dynamics of one-dimensional processes involving adsorption and desorption of extended hard-core particles (dimers, trimers,⋯, k-mers), while interacting through their constituent monomers. Desorption can occur whether or not these latter adsorbed together, which leads to reconstitution of k-mers and the appearance of sectors of motion with nonlocal conservation laws for k≥3. Dynamic exponents of the sector including the empty chain are evaluated by finite-size scaling analyses of the relaxation times embodied in the spectral gaps of evolution operators. For attractive interactions it is found that in the low-temperature limit such time scales converge to those of the Glauber dynamics, thus suggesting a diffusive universality class for k≥2. This is also tested by simulated quenches down to T=0, where a common scaling function emerges. By contrast, under repulsive interactions the low-temperature dynamics is characterized by metastable states which decay subdiffusively to a highly degenerate and partially jammed phase.
Instituto de Física La Plata