Dear All, <div><br></div><div>I am trying to transfer the Amber-type force field into CP2K.</div><div><br></div><div>While translating bonds, angles, and dihedrals definitions were straightforward I feel confused in defining the nonbonding pair interactions.</div><div><br></div><div>My nonbonding interactions are defined in terms of both Lennard-Jones and Buckingham definitions. See the file attached (the parameters in the attachment are
written according to the format of the FIELD file of the DL POLY code).</div><div><br></div><div>I would like to use both Lennard-Jones and Williams's potential (I assume that Williams and Buckingham's potential definitions are very similar if not identical.)</div><div><br></div><div>I assume that I can either express the NONBONDED terms in the main CP2K input (&nonbonded along with explicit definitions of charges, bonds, etc.) or in the external potential file, but the external file only allows NONBONDED definitions within Lennard-Jones scheme? Am I correct?</div><div><br></div><div>Please forgive me, but I am very much confused and any error at this stage will get me completely lost. Any suggestions?</div><div><br></div><div>With best wishes,</div><div>Casper</div>
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