distanceXY colvar-ABF

From: Parisa Akhski (Parisa.Akhshi_at_chem.queensu.ca)
Date: Sun Aug 21 2011 - 09:05:16 CDT

Dear NAMD experts,

In ABF method, I am using "distanceXY" as a colvar to move an ion in XY plane and get the PMF profile. I am wondering what negative and positive signs of force mean in this case since the ion is moving on a circle (defined by the lower and upper boundaries).



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