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The values of the lambda[i][j] were equal to zero and different from lambda[i][i] when the user was not using explicit pair_coeff commands for the i-j pairs in the input script. The "mixing rule" included in this file is the same with the one in the pair_lj_cut_coul_cut_soft.cpp and pair_lj_cut_coul_long_soft.cpp files.
This is the LAMMPS software package. LAMMPS stands for Large-scale Atomic/Molecular Massively Parallel Simulator. Copyright (2003) Sandia Corporation. Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains certain rights in this software. This software is distributed under the GNU General Public License. ---------------------------------------------------------------------- LAMMPS is a classical molecular dynamics simulation code designed to run efficiently on parallel computers. It was developed at Sandia National Laboratories, a US Department of Energy facility, with funding from the DOE. It is an open-source code, distributed freely under the terms of the GNU Public License (GPL). The primary author of the code is Steve Plimpton, who can be emailed at sjplimp@sandia.gov. The LAMMPS WWW Site at lammps.sandia.gov has more information about the code and its uses. The LAMMPS distribution includes the following files and directories: README this file LICENSE the GNU General Public License (GPL) bench benchmark problems cmake CMake build system doc documentation examples simple test problems lib libraries LAMMPS can be linked with potentials interatomic potential files python Python wrapper on LAMMPS as a library src source files tools pre- and post-processing tools Point your browser at any of these files to get started: http://lammps.sandia.gov/doc/Manual.html the LAMMPS manual http://lammps.sandia.gov/doc/Intro.html hi-level introduction http://lammps.sandia.gov/doc/Build.html how to build LAMMPS http://lammps.sandia.gov/doc/Run_head.html how to run LAMMPS http://lammps.sandia.gov/doc/Developer.pdf LAMMPS developer guide You can also create these doc pages locally: % cd doc % make html # creates HTML pages in doc/html % make pdf # creates Manual.pdf and Developer.pdf