Classical interaction potentials for diverse materials from ab initio   data: a review of potfit
  Force matching is an established technique to generate effective potentials for molecular dynamics simulations from first-principles data. This method has been implemented in the open source code potfit. Here, we present a review of the method and describe the main features of the code. Particular emphasis is placed on the features added since the initial release: interactions represented by analytical functions, differential evolution as optimization method, and a greatly extended set of interaction models. Beyond the initially present pair and embedded-atom method potentials, potfit can now also optimize angular dependent potentials, charge and dipolar interactions, and electron-temperature-dependent potentials. We demonstrate the functionality of these interaction models using three example systems: phonons in type I clathrates, fracture of {\alpha}-alumina, and laser-irradiated silicon. 
Peter Brommer, Alexander Kiselev, Daniel Schopf, Philipp Beck,   Johannes Roth, Hans-Rainer Trebin
cond-mat.mtrl-sci physics.comp-ph