Dear Pieter,
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is it possible to specify a weight value for the 1-4 pairwise Lennard-Jones and Coulombic interactions in the EMC setup script (for instance in the ITEM FIELD section) similar to the weight value specified by the “special_bonds” command in LAMMPS? Several OPLS-derived FFs specify a value of 0.5 for the 1-4 interactions which is neither completely on nor completely off.
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I have converted the parameters of a Ryckaert-Bellemans dihedral (6 in total since the series of cos(phi) goes up to the fifth power) to the corresponding five Fourier dihedral terms plus the constant term. The generated output LAMMPS files write the data for a multi/harmonic dihedral style which includes only the first five terms. Is EMC reading the entire line with all 6 terms when creating the initial configurations and can I modify the output style to nharmonic so that all 6 terms are written to the LAMMPS parameter file?
Thanks, Evangelos