Recent content by UFSJ

Hi, guys. I have tried to write a Wang-Landau JDoS algorithm to describe a magnetic perovskite with exchange interactions J1 = 1.66 and J2 = -1.16. Then, I have a simple question: in the WL algorithm, the obtained joint density of states must have all possible E x M microstates? Since the...

Thank by the alert. And now, still cut off?

Hi guys. Using the Wang-Landau algorithm, I have tried to simulate the magnetic behavior of a bulk perovskite by the Monte Carlo method. I have used the JDoS description to build the Energy x magnetization phase space. By a referencing article, this magnetic system can be described by the...

Hi guys. I want some help understanding how I can make the normalization of the JDoS density of states (Ω[E,m]) in the Wang-Landau algorithm. When I am working with DoS (Ω[E]) I use the knowledge that the value of the density of states in the ground states must be equal to Q (Q = 2 for the...

Hi guys. I work with statistichal mechanics, applying classical spin models, as Ising model. I'm trying a collaboration with a colleague that works with first principle calculations. Does anyone know how to calculate the exchange interaction and anisotropic constant (of the Blume-Capel model)...

Hi guys! I'm completely new with dot code to make graph by graphviz and I'm calling by any help. I would like to make a network of, approximately, 1500 nodes, with each node with its position (geographic coordinate) and its own group of bounded nodes. Some nodes have the same position. These...

Thanks pbuk. I'm trying this program. Actually look as very good!

Hi guys, my questions is simple and direct. I'm new in the study of complex systems and would like to know which programs are suggested to use to build a graphs, some thing as 1500 connected points. Thanks a lot!

I'm looking for research projects in the study of complex system, meanly applied in social and biology problems. I would be so grateful with the indication of researchers in the theme. Thanks!

Hi guys. I'm using the Monte Carlo method to simulate a spin lattice. If I have a square lattice, L x L, I can plot the phase transition temperature by the inverse of the lattice length (1/L) to find the phase transition temperature in the thermodynamic limit (extrapolating the curve for 1/L =...

Hi guys. Anyone knows a article showing the method of extrapolation curve of the phase transition's temperature by the inverse of lattice size, applied at low-dimensional lattices, like nanotube and nanowire, for example? Thanks a lot!

Dr. Transport, could you tell me other methods to calculate the error of the susceptibility? Thanks by the help!

Hi. Which is the easiest way to calculate the standard deviation (error) of the magnetic susceptibility by a Monte Carlo simulation? Thanks!

I understood! Thanks guys!

Hi, my question is about the correct means of the expression "computer experiment" in a Monte Carlo simulation. What specifically is an "experiment" in a Monte Carlo simulation? Is the same of "Monte Carlo path" or is the whole process adopted to found a magnetization curve, for example? If the...