<div>Dear Cp2k users</div><div>I'm trying to create a spherical external potential to restrict the excessive motion of molecules during Meta Dynamics simulation. An example provided on Cp2k website https://www.cp2k.org/exercises:2015_cecam_tutorial:mtd1 includes: <br></div><div><br></div><div><img alt="extpot.png" data-iml="8151218" width="396px" height="273.078px" src="cid:c944e11e-5529-401b-a1a6-03b12e99367d"></div><div><br></div><div>My query is : Why 0.000000000001 is multiplied to the potential in each direction and why each potential is raised to the power 4 . <br></div><div><br></div><div>Regards</div><div><br></div><div>Aditya<br></div><div><br></div>
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