Dynamical cluster size heterogeneity

• Autor(a) principal: Lopes, Amanda de Azevedo
• Data de Publicação: 2020
• Outros Autores: Rocha, André Rodrigues de la, Oliveira, Paulo Murilo Castro de, Arenzon, Jeferson Jacob
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/206439
• topic: Modelo de ising; Percolação; Transformações de fase

Only recently has the essential role of the percolation critical point been considered on the dynamical properties of connected regions of aligned spins (domains) after a sudden temperature quench. In equilibrium, it is possible to resolve the contribution to criticality by the thermal and percolative effects (on finite lattices, while inthethermodynamiclimittheymergeatasinglecriticaltemperature)bystudyingtheclustersizeheterogeneity, Heq(T), a measure of how different the domains are in size. We extend this equilibrium measure here and study its temporal evolution, H(t), after driving the system out of equilibrium by a sudden quench in temperature. We show that this single parameter is able to detect and well-separate the different time regimes, related to the two timescales in the problem, namely the short percolative and the long coarsening one.