restraint dihedral

[Jacopo Sgrignani]

Dear All

I would like to know the best way to restrict a dihedral angle during a
simulation.

Without any experience about this, I tried to use a fictitious Colvar
putting two walls to define the space that the dihedral can freely explore.
 Then, the program asks for a value of the SCALE variable during the
metadynamics calculation, and I set this to 0.



However, I'm not sure that this is the correct solution to my problem.



Can somebody suggest me other solutions?



Thanks



Jacopo
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