title: The polarizable point dipoles method with electrostatic damping: implementation on a model system.
abstract: Recently, the use of polarizable force fields in Molecular Dynamics simulations has been gaining importance, since they allow a better description of heterogeneous systems compared to simple point charges force fields. Among the various techniques developed in the last years the one based on polarizable point dipoles represents one of the most used. In this paper, we review the basic technical issues of the method, illustrating the way to implement intramolecular and intermolecular damping of the electrostatic interactions, either with and without the Ewald summation method. We also show how to reduce the computational overhead for evaluating the dipoles, introducing to the state-of-the-art methods: the extended Lagrangian method and the always stable predictor corrector method. Finally we discuss the importance of screening the electrostatic interactions at short range, defending this technique against simpler approximations usually made. We compare results of density functional theory and classical force field-based Molecular Dynamics simulations of chloride in water.
authors.affiliation: Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Campus Nord B4-B5, Barcelona 08034, Spain. jonas.sala@upc.edu
authors.forename: Jonàs
authors.initials: J
authors.lastname: Sala
authors.forename: Elvira
authors.initials: E
authors.lastname: Guàrdia
authors.forename: Marco
authors.initials: M
authors.lastname: Masia
mesh_terms: D002712:Chlorides / Q000737:chemistry; D056004:Molecular Dynamics Simulation; D011789:Quantum Theory; D015203:Reproducibility of Results; D055672:Static Electricity; D013499:Surface Properties; D014867:Water / Q000737:chemistry
chemical_list: D002712:Chlorides; D014867:Water