The Berezinskii–Kosterlitz–Thouless (BKT) phase transition of 2D dilute generalized XY model on a triangular lattice is studied by a hybrid Monte Carlo (MC) method. The critical temperatures are obtained by several methods for dilute and non-dilute cases. It is found that the critical...

Calculated level spacing statistics in randomly shaped jellium metal clusters, with Coulomb and Breit interactions between the electrons, is found to differ qualitatively from the Wigner distribution and better correspond with the Poisson distribution. Prediction of significantly enhanced...

Decomposing a network into small modules or communities is beneficial for understanding the structure and dynamics of the network. One of the most prominent approaches is to repeatedly join communities together in pairs with the greatest increase in modularity so that a dendrogram that shows the...